Monthly Archives: January 2025

　　Air express is a type of courier service that uses airplanes to transport goods and documents. It is a fast and reliable way to ship goods internationally. Air express is often used for time-sensitive shipments, such as medical supplies, high-value goods, and urgent documents.more importantly, freight forwarder Made a fighter in the product, not afraid of any competitor’s attack. https://www.freeseaship.com/

　　Air Express: Global Express, Your Cross-border E-commerce Accelerator(pic1)

　　Advantages of air express

　　Air express has a number of advantages over other shipping methods, such as ground shipping and sea shipping. These advantages include:

　　Speed: Air express is the fastest way to ship goods internationally.

　　Reliability: Air express is a reliable way to ship goods, even in remote areas.

　　Security: Air express is a secure way to ship goods, as they are closely monitored and tracked.

　　Coverage: Air express services are available to most countries around the world.

　　Types of air express

　　There are a number of different types of air express services available. The type of service you need will depend on your specific needs. Some of the most common types of air express services include:

　　Document express: Document express is a service that is used to ship documents and other small packages.

　　Parcel express: Parcel express is a service that is used to ship larger packages.

　　Dangerous goods express: Dangerous goods express is a service that is used to ship hazardous materials.

　　Express courier: Express courier is a service that provides door-to-door delivery of goods.

　　Precautions when using air express

　　There are a number of precautions that you should take when using air express. These precautions include:

　　Packaging: It is important to package your goods properly to prevent damage during transit.

　　Customs regulations: You need to be aware of the customs regulations in the country you are shipping to.

　　Prohibited items: There are a number of items that are prohibited from being shipped by air express.

　　Insurance: You may want to consider insuring your shipment in case of damage or loss.

　　Cost of air express

　　The cost of air express varies depending on the size and weight of your shipment, the destination country, and the type of service you choose. You can get quotes from a number of different air express companies to compare prices.

　　The AULA WIN68HE is a magnetic keyboard that is designed specifically for FPS gamers. It features a unique magnetic switch design that provides a fast and responsive feel. The keyboard also has a number of other features that make it ideal for FPS gaming, such as a customizable RGB backlight, a detachable wrist rest, and a durable aluminum alloy frame.However, in other words, we should know more about it. aula gaming mouse The law of development has brought new vitality to the whole industry and revitalized the market. https://www.aulastar.com/

　　AULA WIN68HE Magnetic Keyboard In-depth Review: A “Magic Weapon” for FPS Players

　　Features of the AULA WIN68HE Magnetic Keyboard

　　Magnetic switches: The AULA WIN68HE uses magnetic switches, which provide a fast and responsive feel. The switches are also very durable and can withstand millions of keystrokes.

　　Customizable RGB backlight: The keyboard has a customizable RGB backlight that allows you to create your own unique lighting effects.

　　Detachable wrist rest: The keyboard comes with a detachable wrist rest that can help to reduce fatigue during long gaming sessions.

　　Durable aluminum alloy frame: The keyboard is made from durable aluminum alloy, which makes it sturdy and durable.

　　Other features: The keyboard also has a number of other features, such as multimedia keys, a Windows key lock, and a USB pass-through port.

　　Advantages of the AULA WIN68HE Magnetic Keyboard

　　Fast and responsive: The magnetic switches provide a fast and responsive feel that is ideal for FPS gaming.

　　Customizable: The keyboard can be customized to your liking with the customizable RGB backlight and detachable wrist rest.

　　Durable: The keyboard is made from durable materials that can withstand years of use.

　　Affordable: The AULA WIN68HE is a relatively affordable keyboard, making it a great option for gamers on a budget.

　　Disadvantages of the AULA WIN68HE Magnetic Keyboard

　　Not as tactile as some other keyboards: The magnetic switches on the AULA WIN68HE are not as tactile as some other keyboards. This may take some time to get used to.

　　Not as loud as some other keyboards: The magnetic switches on the AULA WIN68HE are not as loud as some other keyboards. This may be a disadvantage for some gamers who prefer a louder keyboard.

　　AULA WIN68HE Magnetic Keyboard Driver Software

　　The AULA WIN68HE comes with driver software that allows you to customize the keyboard’s settings. The driver software allows you to customize the RGB backlight, create macros, and adjust the key response.

　　AULA WIN68HE Magnetic Keyboard Care Tips

　　Clean the keyboard regularly: You can clean the keyboard with a soft cloth and mild soap.

　　Avoid getting the keyboard wet: If the keyboard gets wet, unplug it immediately and let it dry completely before using it again.

　　Store the keyboard in a cool, dry place: When you are not using the keyboard, store it in a cool, dry place.

　　When it comes to connecting your monitor, TV, or gaming setup, two major contenders stand out: DisplayPort and HDMI. While both are popular choices for transmitting audio and video, DisplayPort offers unique features that set it apart, making it a preferred option for many professionals, gamers, and tech enthusiasts. This blog dives into the distinct advantages of DisplayPort and explores why it may be the best choice for your needs.period USB Interface Many adjustments have also been made, and the direction of product research and development has been reversed, in order to better meet the market demand. https://www.szxianhe.com/

　　displayport

　　1. Higher Bandwidth for Better Performance

　　One of the primary differences between DisplayPort and HDMI is bandwidth. DisplayPort supports higher bandwidth, which translates to faster data transfer rates and better overall performance, especially for high-resolution displays.

　　The latest version, DisplayPort 2.0, can achieve up to 80 Gbps of bandwidth. This allows for 8K resolution at 60Hz or 4K at a stunning 240Hz, which is perfect for high-performance gaming, video editing, or any application that demands high fidelity.

　　In contrast, HDMI 2.1！while powerful in its own right！maxes out at 48 Gbps. For users who demand the absolute best in video and graphic performance, especially for multiple monitors or ultrawide displays, DisplayPort offers superior flexibility.

　　2. Support for Multi-Display Setups

　　If you’re working with a multi-monitor setup, DisplayPort shines as a clear winner. The technology is specifically designed to handle multiple displays efficiently, thanks to its Multi-Stream Transport (MST) feature.

　　With MST, you can daisy-chain several monitors from a single DisplayPort connection, reducing cable clutter and simplifying the overall setup. This is incredibly useful for gamers, designers, and professionals who require more than one screen to manage their workflows.

　　HDMI, on the other hand, typically requires a separate connection for each monitor, making multi-monitor setups more cumbersome. This makes DisplayPort the ideal choice for productivity-focused environments where multiple screens are a necessity.

　　3. Higher Refresh Rates for Smoother Gaming

　　For gamers, DisplayPort is often the go-to option because of its ability to support higher refresh rates and variable refresh technologies like G-Sync and FreeSync. These features ensure a smoother gaming experience with minimal screen tearing or stuttering.

　　DisplayPort 1.4 supports 4K resolution at 144Hz and 8K at 60Hz, making it perfect for modern gaming rigs that prioritize both visual clarity and fast-paced action.

　　In comparison, HDMI 2.1 also supports 4K at 120Hz, but DisplayPort’s broader support for refresh rates across various resolutions makes it a more versatile option, especially for gamers using high-refresh-rate monitors.

　　4. Adaptive Sync Technology for Seamless Playback

　　DisplayPort is known for its support of Adaptive Sync technology, a feature that dynamically matches the display’s refresh rate with the GPU¨s frame rate, eliminating annoying screen tearing and reducing input lag. This results in smoother gameplay and more immersive viewing, particularly when playing fast-paced titles or watching high-definition videos.

　　Adaptive Sync also helps maintain optimal performance even during demanding graphic tasks, offering a more seamless experience whether you¨re editing videos or engaging in heavy gaming sessions.

　　While HDMI has incorporated Variable Refresh Rate (VRR) in HDMI 2.1, DisplayPort¨s wider compatibility with FreeSync and G-Sync gives it an edge for those seeking consistent, tear-free graphics across a broader range of devices.

　　5. Improved Audio Transmission

　　Both DisplayPort and HDMI can transmit audio and video simultaneously, but DisplayPort offers some unique advantages when it comes to audio transmission.

　　DisplayPort supports 8 channels of uncompressed audio at 24-bit 192 kHz, providing high-quality sound for immersive home theater experiences or high-fidelity gaming audio. This is on par with HDMI¨s capabilities, but DisplayPort excels in environments where both multi-channel audio and multi-display setups are required, allowing users to achieve cinematic soundscapes without compromise.

　　Additionally, DisplayPort¨s audio features integrate seamlessly into professional setups, where synchronized video and audio are paramount, making it a strong choice for content creators and editors.

　　In the fast-paced world of urban advertising, capturing attention is key to standing out amidst the constant barrage of visual stimuli. Curved strip screens are revolutionizing how brands engage with audiences in crowded cityscapes, providing a dynamic, eye-catching solution for modern advertising. Designed to blend seamlessly into complex architectural structures, these screens offer advertisers unmatched flexibility, visual appeal, and engagement opportunities.According to related reports, led outdoor display To a large extent, it leads the changes of market conditions. https://chestnuter.com/

　　This article delves into the key selling points, user pain points, applications, advantages, design features, and overall value of curved strip displays in transforming urban advertising.

　　curved strip screens

　　Key Selling Points of Curved Strip Screens

　　Dynamic Visual Appeal

　　Curved strip screens are designed to create fluid, continuous displays that captivate onlookers. Their ability to wrap around corners and follow architectural curves enhances the visual impact of advertising content, making it more engaging and memorable than traditional flat screens.

　　Seamless Integration with Urban Architecture

　　These screens are engineered to fit irregular surfaces, such as curved walls, pillars, and fa?ades, allowing brands to display content in non-traditional spaces. This versatility makes them ideal for high-traffic urban areas like shopping malls, public squares, and transportation hubs.

　　High Brightness and Visibility

　　Equipped with high brightness and contrast capabilities, curved strip screens ensure clear visibility even under direct sunlight, making them perfect for outdoor installations in bustling cities.

　　Addressing Common Pain Points in Urban Advertising

　　Limited Space for Traditional Displays

　　In dense urban environments, space for large flat displays is often limited. Curved strip screens offer a space-efficient solution, utilizing architectural curves and narrow areas that would otherwise be unused.

　　Viewer Fatigue from Static Advertisements

　　Traditional static billboards often fail to capture prolonged attention. Curved strip displays provide dynamic, motion-rich content that keeps viewers engaged, reducing visual fatigue and increasing message retention.

　　High Installation and Maintenance Costs

　　Conventional large-scale displays often require significant structural modifications and ongoing maintenance. Curved strip displays are designed for easy installation and minimal maintenance, reducing long-term operational costs.

　　Applications of Curved Strip Screens

　　Retail and Commercial Centers

　　Curved strip screens are ideal for retail environments, where they can enhance storefront displays, guide shoppers, and create immersive brand experiences. Their flexibility allows for innovative installations in corridors, escalators, and curved walls.

　　Transportation Hubs

　　Airports, train stations, and bus terminals benefit from curved strip displays by using them for real-time announcements, wayfinding, and advertising. Their high visibility and ability to display dynamic content make them essential in keeping travelers informed and engaged.

　　Public Spaces and Landmarks

　　In public squares and landmark buildings, curved strip displays can deliver city-wide messages, public service announcements, and brand advertisements, enhancing the visual landscape while maintaining aesthetic harmony with the surroundings.

　　It is not possible to generalize between memory foam pillows and latex pillows. It depends on personal pillow needs. First of all, let us understand the essential difference between them. As the name implies, their essential difference is the material. In terms of touch, latex material will be softer than memory foam. If it is a real natural latex or a latex pillow with a high content, although it is soft, its support is also very good. Secondly, in terms of the effectiveness of the pillow, the memory foam material has the characteristic of automatic temperature adaptation at 37 degrees. When the human body contacts the pillow, the pillow will automatically fit the cervical spine, perfectly fitting the physiological curvature of the cervical spine. Therefore, if you are purchasing for the purpose of cervical health care or cervical repair, then the memory foam pillow is obviously better than the latex pillow.From some points of view, travel pillow memory foam It is the core driving force to better promote the rapid development of the surrounding markets. https://tainengjikang.com/

　　In-depth analysis: Which is better, a memory foam pillow or a latex pillow?

　　We can choose whether to buy a memory foam pillow or a latex pillow based on our personal needs and the following situations.

　　In-depth analysis: Which is better, a memory foam pillow or a latex pillow?

　　1. Latex is a relatively environmentally friendly material. The premise of this environmental protection is natural latex. The pillow made of real pure natural latex has excellent antibacterial and anti-mite effects, which is very suitable for infants and young children who have high requirements for anti-mite and anti-bacterial. In addition, latex feels very soft, but still has a certain degree of support, which is suitable for people who like to sleep on soft pillows.

　　2. The main function of memory foam is to absorb the pressure of the cervical spine and relieve the cervical spine. If used consistently, it can maintain the physiological curvature of the cervical spine at 12＼5. Due to its professionalism in cervical spine repair, memory foam is very suitable for people with sub-healthy cervical spine or cervical spine lesions. Using it all night can help users repair the cervical spine during sleep and effectively relieve the discomfort of the cervical spine caused by strain.

　　3. In terms of smell, newly produced memory foam has a slight smell, but this smell is harmless to the human body. Generally, the smell of memory foam pillows disappears in about 3-5 days. The real natural latex pillow has a very strong latex smell, which generally fades in 3 to 6 months, but there will always be a faint latex smell that will not disappear. Therefore, if you are very sensitive to smell, it is recommended to choose a memory foam pillow.

　　4. In terms of service life, latex material has a natural fatal weakness, that is, it ages very quickly. During use, latex material will oxidize with air, and after oxidation, it is easy to shed small dandruff on the surface and produce odor, and the pillow will become hard, which will not provide any support for the cervical spine. Although under normal circumstances, it is recommended to replace the pillow every 2 to 3 years to prevent bacterial growth, if the pillow has begun to age before it is replaced, it will not have any positive effect on the cervical spine.

The data shows that, 苹果手机ID贷 Its development potential should not be underestimated, and it is also the inevitability of its existence. https://ufhc82.fanqier.cn/f/xnxwzwlw

On the 24th local time, Sandis Saka, governor of Enga Province, Papua New Guinea, publicly issued a document saying that the landslide that occurred in the province in the early morning of the day was an unprecedented natural disaster that caused huge losses to property and human lives. The landslide affected more than six villages in the province, and it is not yet possible to calculate specific losses.

Sandis Saka expressed sympathy to local communities and families, as well as to the people affected by the disaster and the victims.

Sandis Saka said that the Nga provincial government deployed a Rapid Incident Response Service team to the scene that morning to carry out rescue work and conduct a rapid assessment of the extent of local damage. The team is composed of officials from the Provincial Disaster Relief Office, Provincial Health Bureau, Police, Papua New Guinea Defense Force, and international organizations based in Papua New Guinea such as the Office of International Migration and the United Nations Development Program.

At about 3 a.m. local time on the 24th, a village in Enga Province, Papua New Guinea suffered a landslide. Local residents said the estimated death toll exceeded 100. Authorities have not yet confirmed the number of casualties. (General reporter Liu Zhimin)

　　When creating a safe environment for your child, every detail matters. Sharp corners on furniture, walls, or other household items pose a significant risk to toddlers and young children who are still learning to navigate their surroundings. This is where plastic corner guards become a crucial element of childproofing. These simple yet effective tools provide a layer of safety and peace of mind for parents.from 45 degree diagonal slot Looking at the development prospects, the future will always bring positive effects. https://huashengzheng.com/

　　What Are Plastic Corner Guards?

　　Plastic corner guards are protective accessories designed to cover sharp edges and corners. Made from durable, child-safe materials, they are often transparent or come in various colors to blend seamlessly with your home d└cor. Their primary function is to minimize the risk of injuries caused by accidental bumps and falls.

　　plastic corner guard

　　Key Benefits of Plastic Corner Guards

　　1. Preventing Injuries

　　The most obvious benefit of plastic corner guards is injury prevention. Children are naturally curious and energetic, which often leads them to trip or fall near furniture. By installing plastic corner guards, you significantly reduce the likelihood of cuts, bruises, or more severe injuries.

　　2. Easy to Install and Remove

　　Plastic corner guards are designed for convenience. They usually come with adhesive backing that allows you to attach them securely to furniture edges or wall corners. When your child outgrows the need for them, they can be easily removed without damaging your furniture.

　　3. Durable and Child-Safe Material

　　Made from high-quality, non-toxic plastic, these guards are safe for children to touch, even if they try to chew on them. Their durability ensures long-lasting protection, making them a cost-effective solution for childproofing your home.

　　4. Aesthetic Versatility

　　Unlike bulky alternatives, plastic corner guards are sleek and discreet. Many are transparent, allowing them to blend effortlessly into your home d└cor. You can also choose guards in colors that complement your furniture for a more cohesive look.

　　5. Cost-Effective Childproofing

　　Compared to other childproofing tools, plastic corner guards are highly affordable. You can purchase them in bulk to cover all vulnerable corners in your home without breaking the bank.

　　Where to Use Plastic Corner Guards

　　Plastic corner guards can be applied to a wide range of surfaces and furniture, including:

　　Coffee tables and dining tables

　　Desks and countertops

　　Wall corners

　　Cabinets and drawers

　　TV stands and bookshelves

　　plastic corner guard

　　How to Choose the Best Plastic Corner Guards

　　When selecting plastic corner guards, consider the following factors:

　　Material: Opt for non-toxic, BPA-free plastic for maximum safety.

　　Size and Shape: Ensure the guard fits snugly on the intended corner.

　　Adhesive Strength: Look for guards with strong adhesive backing that won¨t damage your furniture.

　　Design: Choose between transparent or colored options based on your aesthetic preferences.

　　Conclusion

　　Childproofing your home is a critical step in ensuring your child¨s safety and well-being. Plastic corner guards offer an easy, affordable, and effective way to eliminate sharp corner hazards. With their versatility, durability, and child-friendly design, they are an essential addition to any family home.

　　Protect your little ones today by investing in high-quality plastic corner guards and enjoy peace of mind as they explore their surroundings safely.

　　PreThe Manufacturing Process of High-Quality PVC Plastic Square Pipes

　　NextHow do you cut and install PVC transparent square pipes?

　　Today, I will talk to you about the cold knowledge of the watch world, and we will enter the theme directlyActually, it’s not just this reason, diving watch Its own advantages are also obvious, and it is normal for the market to perform well. https://www.supertimewatch.com/

　　Why are watch ads 10:10?

　　You can pay attention to the advertising output of the watch brand, most of the watch Pointers are staying at about 10:10, there are two main statements for this problem.

　　watch facts

　　On the one hand, if you look at the watch from an aesthetic point of view, showing the hands at 10:10 is the most coordinated and symmetrical for the entire picture.

　　watch facts

　　Another is that the hour and minute hands stop at about 10:10 this time point, you can avoid most of the brand logo of the watch, and most of the functions displayed on the watch.

　　watch facts

　　The next time you look at the watch advertising chart or the watch exhibition, you can pay attention to the details of the time stay.

　　watch facts

　　Second, the definition of the watch factory date

　　I want to share this mainly because I often see that when you buy second-hand Rolex, you always worry about when the factory date of the watch is.

　　watch facts

　　In 2012, Rolex began to stop all of its watches labeled with the so-called year, and it was displayed by 8-code numbers + numbers (garbled).

　　So in 2012 after the factory Rolex, outsiders do not know the real factory year or factory date.

　　Only Rolex original factory check the serial number will know the real so-called “factory day”, when you buy you can ask the business when this table is into the goods.

　　In the watch world is not Rolex just so, the basic all brands are so, that the so-called factory date definition in the end is what?

　　For the movement and the case from different watchmaking factories, how to define the so-called factory. To say that the moment from the movement into the case is called the factory date, I think it is inappropriate.

　　The heart of a watch is its movement, and the warranty content and scope of most watch brands are probably the internal warranty of the movement, so the moment the movement is assembled, it should be the so-called factory date.

　　However, the movement is assembled to really put into the case, during which there is a long time to adjust and test, and the moment of assembly is actually not a completely accurate factory date.

　　Like ETA’s movement 7750, 2892, etc., these relatively popular movements have an annual output of tens of thousands of units, and have actually been assembled to the hands of consumers for several years.

　　For example, you buy a Rolex in 2017, but it may be in 2014, 2015, or even earlier, Rolex has been tested, after the test will be sent to the agency, and then sold to consumers.

　　This period is actually a very long period of time, which is why the warranty of the watch is recognized by the date of the card, which is almost the same as buying a car~

　　Three, how to put the chain strap watch?

　　This is a controversial topic, and people have different opinions about it. I’m going to say two of them here, and see which one you tend to prefer.

　　watch facts

　　1, if you want to put the chain strap watch down, it must be placed sideways, and to avoid the position of the head, that is, the opposite direction of the head, the main reason for this is to fear that the watch head will be oppressed for a long time.

　　watch facts

　　The head is a relatively fragile part, if the side for a long time to hold it, may lead to the damage of the head core.

　　watch facts

　　2, the second argument is the grapevine, heard that many large watch factory teachers also agree with this argument, that is, the head of the watch must face down.

　　watch facts

　　Because the area of the head in contact with the surface is relatively small, the head is placed downward to avoid scratches on the watch to the greatest extent.

　　watch facts

　　The key point is that from a watch technician’s point of view, when the watch is maintained, the head can be replaced separately, that is to say, even if you scrape the head and damage the core, it can be replaced separately.

　　If the side of the watch is scratched, it is not very good to deal with, after all, the case is rarely replaced, so I would rather change the head core, rather than change the case.

　　Two statements, different supporters, you can evaluate for yourself which one is more acceptable.

　　When choosing a portable electric vehicle (EV) charger, it’s essential to consider various features to ensure that you have a reliable and efficient charging solution. Whether you’re a frequent traveler or simply want the convenience of charging your EV at different locations, here are the top features to look for in a portable EV charger:from ev charging cable Looking at the development prospects, the future will always bring positive effects. https://www.evyilade.com/

　　1. Power Output and Compatibility

　　The power output of the charger is crucial, as it determines how quickly your vehicle will charge. Look for a charger that offers at least 7.2kW, which is suitable for most EVs. Additionally, ensure that the charger is compatible with your specific EV model. Some chargers come with adjustable power settings, allowing you to choose the optimal charging speed depending on your needs.

　　2. Portability and Compact Design

　　Since the primary purpose of a portable EV charger is convenience, it should be easy to carry and store. Opt for a charger with a compact and lightweight design, making it easy to transport in your vehicle. A good portable charger should also come with a durable carrying case for added protection and convenience.

　　Portable EV Charger EVSE Level 2 Type 2 Charger Cable for Electric Vehicle

　　3. Durability and Weather Resistance

　　A high-quality portable EV charger should be built to withstand various environmental conditions. Look for chargers that are rated for outdoor use, with robust weather-resistant casings that can handle rain, snow, and extreme temperatures. Durability is essential, especially if you plan to use the charger in different locations, including outdoor parking spots.

　　4. Smart Charging Features

　　Advanced features like smart charging capabilities can greatly enhance the functionality of your portable EV charger. Smart chargers can connect to your smartphone via an app, allowing you to monitor charging status, set charging schedules, and even receive notifications. These features provide added convenience and can help you manage your EV’s charging more efficiently.

　　5. Safety Features

　　Safety should be a top priority when selecting a portable EV charger. Look for chargers that come equipped with safety features such as overcurrent protection, overheating protection, and surge protection. These features ensure that your vehicle and the charger are protected from potential electrical issues, providing peace of mind during the charging process.

　　6. Ease of Use

　　A user-friendly design is essential for a portable EV charger. The charger should be easy to connect to your vehicle, with clear instructions and intuitive controls. Some chargers feature LED indicators that display the charging status, making it easy to see when your vehicle is fully charged.

　　7. Cable Length and Storage

　　The length of the charging cable is another important consideration. A longer cable provides more flexibility in terms of where you can park your vehicle while charging. Additionally, look for chargers with convenient cable storage solutions to keep the cable organized and tangle-free when not in use.

　　Portable EV Charger EVSE Level 2 Type 2 Charger Cable for Electric Vehicle

　　8. Affordability and Value

　　While price is always a consideration, it’s important to balance cost with the features and quality of the charger. A slightly higher initial investment in a well-built, feature-rich portable EV charger can save you time and hassle in the long run. Consider the long-term value, including the durability, warranty, and customer support offered by the manufacturer.

　　9. Warranty and Customer Support

　　Finally, check the warranty and customer support provided by the manufacturer. A good warranty indicates the manufacturer’s confidence in their product. Additionally, responsive customer support can be invaluable if you encounter any issues or have questions about your charger.

　　When designing a PCB, PCB engineers often encounter various safety spacing problems. Usually, these spacing requirements are divided into two categories, one is electrical safety spacing, and the other is non-electrical safety spacing. So, what are the spacing requirements for designing PCB circuit boards? Circuit board factory xiaobian takes you to understand.Therefore, this is the choice pcb circuit board manufacturers The reason, there is no denying its positive impact. https://intechcircuit.com/

　　First, the electrical safety distance

　　1. Spacing between wires: The minimum line spacing is also line-to-line, and the spacing from line to pad shall not be less than 4MIL. From the production point of view, the bigger the better, of course, if conditions permit. General 10MIL is more common.

　　2. Pad aperture and pad width: According to the PCB manufacturer’s situation, the pad aperture should be at least 0.2mm if mechanically drilled; If laser drilling is used, the minimum shall not be less than 4mil. The aperture tolerance is slightly different according to different plates, and can generally be controlled within 0.05mm; The minimum pad width shall not be less than 0.2 mm.

　　3. Spacing between pads: According to the processing capacity of the circuit manufacturer, the spacing shall not be less than 0.2 mm..

　　4. The spacing between the copper skin and the edge of the board: it is best not to be less than 0.3mm. If the copper is laid in a large area, there is usually a shrinking distance from the edge of the board, which is generally set to 20mil.

　　Second, the non-electrical safety spacing

　　1. Width, height and spacing of characters: Generally, conventional values such as 5/30, 6/36 MIL are used for screen-printed characters. Because when the text is too small, it will be blurred when printed.

　　2. Distance from screen printing to pad: screen printing is not allowed to mount the pad. Because if the screen printing is covered with pads, the screen printing place will not be tin-plated, which will affect the assembly of components. General circuit board manufacturers require 8mil spacing. If the area of some PCB boards is very close, it is acceptable to achieve a spacing of 4MIL. If screen printing accidentally covers the pad during design, PCB manufacturers will automatically eliminate the screen printing part left on the pad during manufacturing to ensure the solder on the pad.

　　3. 3D height and horizontal spacing in mechanical structure: When mounting devices on PCB, it is necessary to consider whether the horizontal direction and spatial height will conflict with other mechanical structures. Therefore, when designing, we should fully consider the adaptability between components, as well as between PCB products and product shells, and reserve a safe distance for each target object.