Yearly Archives: 2024

　　Have you guys ever encountered this before?In the long run, freight forwarder The value will be higher and higher, and there will be a great leap in essence. https://www.freeseaship.com/

　　After finally buying some snacks, clothes and cosmetics from China,

　　but suddenly notified that the package was taxed?

　　It¨s really a headache to encounter this kind of problem.

　　Don¨t worry

　　FREE SEA is here to help

　　Avoid taxes cleverly

　　Let your package pass customs easily

　　Save money and worry!

　　1. Why are taxes and fees generated?

　　In international express delivery, taxes and fees are usually the result of a combination of factors such as the value and type of goods and the import policy of the destination country, and are generally due to the following two points:

　　1) Spot checked by customs

　　2) The total value of the package exceeds the tax point of the destination country

　　2. How to determine whether your express delivery is taxed?

　　1) Generally speaking, if the package is taxed, you will receive a text message/phone reminder from the express company

　　2) Track and query the package logistics information through the logistics company’s official website/third-party logistics query website

　　3) Call 11183 for inquiries

　　3. How to deal with the tax?

　　1) Pay taxes by yourself: If it is convenient, you can choose to go to the designated tax payment location or online platform to pay taxes by yourself.

　　2) Entrust a courier company to pay on your behalf: Some courier companies provide tax payment services. You can contact the courier company to learn about the specific process and fees of the payment.

　　3) Consult the customs or professional institutions: If you have any questions about the tax payment process or tax calculation, you can directly contact the customs or consult a professional customs declaration agency.

　　international delivery

　　4. How to avoid being taxed?

　　1) Understand the import policy of the destination country

　　Different countries have different import policies, and there are certain restrictions on the types and quantities of goods. Before sending express delivery, it is best to understand the import policy of the destination country to avoid being taxed due to violations.

　　2) Reasonably declare the value of goods

　　Customs clearance principle: Taxes are collected according to the value of the goods and the tax number.

　　Therefore, when filling out the express delivery form, be sure to accurately and reasonably declare the value of the goods, and do not over- or under-estimate!

　　3) Choose the right mode of transport

　　Different modes of transport will have different taxes and fees. Generally speaking, air transport will have higher taxes and fees, while sea transport will have lower taxes and fees.

　　4) Take advantage of the tax-free quota

　　Many countries have a tax-free quota policy, which means that goods below a certain amount can enter the country tax-free. When sending express delivery, the value of the goods can be controlled within the tax-free quota.

　　5) Choose a reliable shipping company

　　It is also important to choose a shipping company with strong customs clearance capabilities, high service quality, and multiple channels.

　　Finally, if you still have questions or if you have shipping needs, you can send us a private message~

　　In an era where sustainable energy is more critical than ever, solar panels have become indispensable for both personal and professional use. The Packsico 72V portable solar panel stands out in the market, offering a high-voltage, efficient, and portable solution for a wide range of applications. This blog post explores the features, benefits, and practical uses of the packsico 72V portable solar panel, demonstrating why it is an essential investment for anyone seeking reliable, renewable energy.Actually, it’s not just this reason, packsico portable solar panel Its own advantages are also obvious, and it is normal for the market to perform well. https://www.packsico.com/

　　What is a 72V Portable Solar Panel?

　　A 72V portable solar panel is designed to convert sunlight into electrical energy at a higher voltage, making it suitable for more demanding power needs. The Packsico 72V model offers portability and efficiency, allowing users to harness solar energy on the go.

　　Packsico 72V portable solar panel

　　Key Features of the Packsico 72V Portable Solar Panel

　　1. High Voltage Output

　　The 72V output of the Packsico solar panel is ideal for applications requiring more power. This higher voltage ensures efficient energy transfer and compatibility with a range of devices and systems.

　　2. Portability and Ease of Use

　　Designed with portability in mind, the Packsico 72V solar panel is lightweight and easy to transport. Its foldable design and sturdy carry handle make it perfect for outdoor activities, travel, and emergency use.

　　3. High Efficiency

　　Equipped with advanced solar cells, the Packsico 72V panel offers high efficiency in converting sunlight into usable electricity. This efficiency ensures maximum power output, even in less-than-ideal weather conditions.

　　4. Durability and Weather Resistance

　　Constructed from robust materials, the Packsico solar panel is built to withstand harsh environments. It features water-resistant and dustproof properties, ensuring reliable performance in various weather conditions.

　　5. Versatile Connectivity

　　The Packsico 72V solar panel comes with multiple connectivity options, including DC outputs and USB ports, making it compatible with various devices and charging systems. This versatility enhances its utility for different power needs.

　　Packsico 72V portable solar panel

　　Benefits of the Packsico 72V Portable Solar Panel

　　1. Sustainable and Renewable Energy Source

　　Using solar panels helps reduce reliance on non-renewable energy sources. The Packsico 72V portable solar panel allows you to harness clean energy from the sun, contributing to a greener environment.

　　2. Cost-Effective Power Solution

　　While the initial investment in a high-quality solar panel may be significant, the long-term savings on energy costs are substantial. Solar energy is free, and the Packsico 72V panel can reduce or eliminate the need for traditional power sources.

　　3. Energy Independence

　　The portability and high output of the Packsico 72V solar panel provide energy independence. Whether you’re camping, living off-grid, or facing a power outage, this solar panel ensures you have a reliable power source.

　　4. Quick and Efficient Charging

　　With a high voltage output, the Packsico 72V panel can charge batteries and devices quickly and efficiently. This fast charging capability is crucial for users who need to power multiple devices or systems simultaneously.

　　5. Versatility in Applications

　　The Packsico 72V portable solar panel is suitable for various applications, including outdoor activities, travel, emergency preparedness, and off-grid living. Its versatility makes it a valuable tool for different energy needs.

　　Conclusion

　　The Packsico 72V portable solar panel is a powerful, efficient, and versatile energy solution. Its high voltage output, portability, and durability make it ideal for a wide range of applications, from outdoor activities and travel to off-grid living and emergency preparedness. By investing in the Packsico 72V solar panel, you can enjoy the benefits of renewable energy, reduce your environmental impact, and ensure a reliable power source wherever you go.

　　CNC machining, also known as computer numerical control machining, is a manufacturing process that utilizes computer digital control technology to operate machine tools for part machining.With the expanding influence of the industry, stainless steel fasteners supplier Our business is also constantly spreading, and the development of the market is also gradually advancing. https://shwhardware.com

　　It has high precision and repeatability, and can process complex geometric shapes and high-precision parts. By using a pre written CNC program, the motion trajectory, cutting speed, feed rate, and other parameters of the tool on the workpiece are controlled to achieve precise cutting processing.

　　CNC machining can be applied to various materials, including metals (such as aluminum alloys, stainless steel, titanium alloys, etc.), plastics, composite materials, etc. It plays an important role in many industries such as aerospace, automotive manufacturing, medical devices, and electronic equipment.

　　Its advantages include improving production efficiency, reducing manual operation errors, shortening production cycles, and achieving complex shape processing.

　　The swimming pool heat pump is an air source heat pump designed by the air energy manufacturer specifically for swimming pools. Its working principle is the same as that of ordinary air source heat pumps. The difference between the two is:This is due to air source heat pump Its value attribute is relatively large, and it is easy to become the backbone of the industry. http://mangoenergyheatpump.com

　　Ordinary air source heat pumps are mainly used for domestic hot water heating, while swimming pool air source heat pumps are dedicated to constant temperature heating of swimming pools. The heat exchanger is made of special pure titanium tubes with good corrosion resistance. Because swimming pools need to be cleaned by adding chemicals, ordinary heat pumps will quickly corrode the heat exchanger. In the past, swimming pools liked to use coal/gas/oil, electric boilers and other equipment to provide hot water, but in recent years, with the country’s attention to environmental protection and other issues, coupled with the shortcomings of coal/gas/oil, electric boilers and other equipment themselves, such as unsafe, high pollution and high cost, more and more swimming pools and swimming pools have begun to choose new hot water equipment to provide hot water for swimming pools. Among them, swimming pool air source heat pumps have become the object of constant temperature pursuit of villa swimming pools, swimming pools, and fitness clubs.

　　What are the advantages of swimming pool air source heat pumps?

　　1. Safe, environmentally friendly and pollution-free. No coal or oil is consumed, so there is no need to worry about coal prices or fire or explosion safety issues. Moreover, there is no pollutant emission to the environment during use, no environmental pressure, and it meets national environmental protection requirements. There is no need to face annual inspections by boiler-related departments.

　　2. It is more energy-efficient and saves more money. The heating efficiency of ordinary air-energy heat pumps is generally 400%, which is four times that of ordinary electric water heaters. However, because the swimming pool air-energy heat pump can control the temperature at only 28＜C, which is lower than the outlet water temperature of ordinary air-energy heat pumps, the heating efficiency is as high as 520%, which is more energy-efficient.

　　3. Accurate temperature control and more comfortable. The air-energy swimming pool constant temperature system has a wider temperature operation range (ambient temperature range -25-43＜C, water temperature control range 20-55＜C), and can automatically adjust the flow rate according to ambient temperature, water temperature and other data to ensure stable and efficient operation of the unit. And it is not affected by natural climate such as wind, light, rain, and snow, and can achieve constant temperature of the swimming pool throughout the year.

　　High-strength socket head screws are indispensable components in various industrial applications due to their superior strength, reliability, and versatility. These fasteners are designed to handle high-stress environments and ensure secure and durable connections. Here, we explore the key industrial applications where high-strength socket head screws play a crucial role.Mentioned in the article custom screw Born with strong vitality, you can turn a cocoon into a butterfly and become the best yourself after wind and rain. https://shwhardware.com

　　1. Aerospace Industry

　　The aerospace industry demands fasteners that can withstand extreme conditions, including high temperatures, vibrations, and stress. High-strength socket head screws are used extensively in aircraft assembly, engine components, and avionics. Their ability to maintain integrity under intense pressure and temperature variations makes them ideal for aerospace applications.

　　socket head screws

　　2. Automotive Manufacturing

　　In the automotive industry, precision and durability are paramount. High-strength socket head screws are used in assembling critical components such as engines, transmissions, and suspension systems. These screws ensure that the connections remain secure even under the strain of high-speed operations and harsh driving conditions.

　　3. Heavy Machinery and Equipment

　　Heavy machinery and industrial equipment require fasteners that can endure significant loads and mechanical stress. High-strength socket head screws are used in construction equipment, agricultural machinery, and mining equipment. Their robust construction and reliable performance make them essential for maintaining the structural integrity of these machines.

　　4. Marine Applications

　　Marine environments pose unique challenges, including exposure to saltwater, which can lead to corrosion. High-strength socket head screws, particularly those made from corrosion-resistant materials such as stainless steel or titanium, are used in shipbuilding, offshore platforms, and marine equipment. These screws ensure long-lasting performance and reliability in harsh maritime conditions.

　　5. Medical Devices

　　Precision and reliability are critical in the medical field. High-strength socket head screws are used in the manufacturing of medical devices and equipment, such as surgical instruments, diagnostic machines, and implants. Their ability to provide secure and stable connections is vital for patient safety and the proper functioning of medical devices.

　　6. Electronics and Telecommunications

　　The electronics and telecommunications industries require fasteners that can provide precise and secure connections in compact and sensitive devices. High-strength socket head screws are used in assembling electronic components, circuit boards, and communication equipment. Their small size and high strength make them ideal for ensuring the reliability and longevity of electronic devices.

　　7. Renewable Energy

　　In the renewable energy sector, high-strength socket head screws are used in the construction and maintenance of wind turbines, solar panels, and hydroelectric equipment. These screws ensure the stability and durability of structures exposed to varying weather conditions and mechanical stresses.

　　8. Manufacturing and Assembly Lines

　　High-strength socket head screws are widely used in manufacturing and assembly lines for securing machinery, fixtures, and tooling. Their reliable performance helps maintain the efficiency and safety of production processes.

　　socket head screws

　　Conclusion

　　High-strength socket head screws are essential components across various industries due to their exceptional strength, reliability, and versatility. From aerospace and automotive to medical devices and renewable energy, these screws play a critical role in ensuring the integrity and performance of industrial applications. Their ability to withstand high-stress environments and provide secure connections makes them a preferred choice for engineers and manufacturers worldwide.

　　”Big bags, small bags, please go through security check!” Security check is always an essential step when you travel by high-speed rail, airplane, or subway. I wonder if you have ever been interested in this security check machine. What can the staff see on the screen? How do they quickly identify the items in the suitcase? Today, let the editor reveal this secret for you.in fact baggage scanner machines Our related products were once praised by users, which is the best self-affirmation of the products. https://secuzoan.com/

　　security check

　　How does the security inspection machine work?

　　Generally speaking, the machine that conveys and inspects luggage is called an X-ray luggage inspection machine. As the name suggests, the security inspection machine uses X-rays to inspect luggage.

　　X-rays are short-wavelength electromagnetic waves that can penetrate objects. The penetration of X-rays varies depending on the thickness, density and material of the object.

　　Everyone should know that X-rays in hospitals are also used by doctors. The penetration rate of X-rays varies according to the density of the structure and tissue. The penetration rate is high in loose areas and low in dense areas. The bones of the human body are denser than the skin and flesh tissue. Therefore, when X-rays are irradiated to the human body, the outline of the bones will be displayed more clearly on the screen.

　　security check

　　The same is true for the security inspection machine that checks luggage. The penetration rate of X-rays on different objects is different. When the suitcase passes through the security inspection machine, the X-rays penetrate the suitcase and display the outlines of different objects on the display screen.

　　At this time, some friends may feel confused: X-ray imaging should be black and white, so why can security inspectors identify different objects so quickly?

　　This question really hits the nail on the head. If you have ever looked at the security check display screen, you will find that the image on it is in color, not black and white.

　　security check

　　Normally, the color of the image formed by X-rays on the film is indeed black and white, just like the X-ray photos in the hospital. The reason why a color image appears on the security screen is that the computer calculates and converts the projection intensity of the X-rays. This is also to make it easier for security personnel to quickly distinguish different objects in a short period of time.

　　Normally, orange represents organic matter such as liquids and sprays; blue represents metals and various controlled knives; and heavy metals or lead, which can completely absorb X-rays, will be displayed in black.

　　Now you should know why the staff will immediately notice and ask you to take out a small pair of scissors in your suitcase; and the water in your backpack will also be asked to take out and drink a sip.

　　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.In order to grow rapidly, travel pillow memory foam Do not hesitate to change the strategy and rearrange the products, so as to obtain unexpected results. 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.

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

　　If it is used daily to protect the vertebrae and relieve the cervical spine, it is recommended to choose memory foam or latex material. Of course, if the focus is on the neck protection function, memory foam is definitely more preferred. The most intuitive difference between these two materials is that the real memory foam material feels harder than real latex or latex pillows with a high latex content. The real natural latex material or latex pillow with a high latex content feels quite soft, but both have very good support. Of course, this premise is that you buy high-quality products. If it is a memory foam with talcum powder added, or a latex pillow made of synthetic latex, its effect and comfort level will be greatly reduced.

　　As the push for sustainable living continues to grow, many homeowners are turning to geothermal heat pumps as a viable option for efficient heating and cooling. However, despite their increasing popularity, several misconceptions about geothermal ground source heat pumps can lead to misunderstandings and hesitation. In this article, we¨ll debunk some of the most common myths surrounding geothermal energy heat pumps to help you make an informed decision about this eco-friendly technology.The above conclusions show that Inverter heat pump To a great extent, it can bring new vitality to the market and make the industry develop well. http://mangoenergyheatpump.com

　　1. Geothermal Heat Pumps Are Too Expensive

　　One of the most widespread misconceptions about geothermal heat pumps is that they are prohibitively expensive. While the initial installation cost of a geothermal ground source heat pump is higher compared to traditional heating and cooling systems, the long-term savings can make it a cost-effective choice. The high upfront investment is often offset by significantly lower energy bills, reduced maintenance costs, and various tax incentives and rebates. Over time, the efficiency and durability of geothermal energy heat pumps can result in substantial savings, making them a financially wise decision.

　　2. Geothermal Heat Pumps Don¨t Work in Cold Climates

　　Another common myth is that geothermal heat pumps are ineffective in colder climates. In reality, geothermal ground source heat pumps are highly efficient regardless of the external temperature. They work by transferring heat from the ground, which maintains a relatively constant temperature throughout the year. Even in regions with harsh winters, the ground remains a stable heat source, allowing geothermal energy heat pumps to provide consistent heating and cooling performance.

　　3. Installation Is Too Disruptive

　　Some homeowners worry that installing a geothermal heat pump will be too disruptive and require extensive excavation. While it¨s true that installing a geothermal ground source heat pump involves some digging, advancements in technology and installation methods have significantly reduced the impact. Horizontal loop systems, which require extensive digging, can be replaced with vertical loop systems that involve smaller boreholes. Moreover, the installation process is generally less disruptive than major renovations and is often completed within a few days.

　　4. Geothermal Heat Pumps Require Constant Maintenance

　　There is a misconception that geothermal energy heat pumps demand constant maintenance. In fact, geothermal heat pumps are known for their reliability and low maintenance requirements. Unlike traditional heating and cooling systems that rely on combustion, geothermal ground source heat pumps have fewer moving parts and do not involve high-temperature operations. Regular maintenance, such as checking the loop system and ensuring that the heat pump¨s filters are clean, is typically sufficient to keep the system running efficiently.

　　5. Geothermal Heat Pumps Are Noisy

　　Some people believe that geothermal heat pumps are noisy and disruptive. However, geothermal energy heat pumps are among the quietest HVAC systems available. Since the primary components of a geothermal ground source heat pump are located underground or in a basement, noise levels are significantly lower compared to traditional systems with outdoor compressors. The indoor units are designed to operate quietly, ensuring that your home remains peaceful and comfortable.

　　Production process of PET blood collection tube:Not only does it perform well in data, moulded plastic parts In the market share, it is also gradually expanding, so that more people can benefit. https://www.dghrjmmj.com

　　Raw material preparation: High quality PET particles are selected as the main raw material, and certain additives are added to improve performance.

　　Injection molding: Heating PET particles to a molten state and injecting them into the blood collection tube mold through an injection molding machine to form a preliminary tube shape.

　　Cooling solidification: Cooling in the mold to solidify and shape the tube body.

　　Demoulding and removal: Remove the formed blood collection tube from the mold.

　　Subsequent processing may include trimming the pipe mouth, inspecting the appearance quality, and performing disinfection treatment.

　　Production process of test tube mold accessories:

　　Design and Planning: Based on the requirements of the mold, design the shape, size, and structure of the accessories.

　　Material selection: Choose suitable steel materials, such as tool steel, according to the requirements of the accessories.

　　Rough machining: Processing steel into rough shapes through processes such as turning and milling.

　　Heat treatment: Quenching, tempering and other heat treatments are carried out on the rough machined parts to improve hardness and wear resistance.

　　Precision machining: high-precision machining methods such as grinding and electrical discharge machining are used to achieve the designed precision and surface roughness requirements for the parts.

　　Assembly and debugging: Assemble and debug various mold components to ensure their precision and smooth movement.

　　The security system is a system that we must learn when we enter this industry. So what subsystems does the security system contain? What does the security alarm system bring us? With the accelerated development of the domestic urban process, home security has gradually received attention from everyone. Especially in the field of anti-theft alarm, the application scope is becoming more and more extensive, from the previous single anti-theft function to the current anti-theft, monitoring, and alarm functions. At present, it is most used in high-end residential areas and villa areas. With the demand of the market, it is gradually moving towards the field of building security, and the home alarm system guarantees the safety of our lives and property.After screening and investigation wired PIR motion sensor It is likely to become a new force driving economic development. https://www.sunlit-tech.com

　　What does the security alarm system bring us?

　　The home alarm system provides us with three types of protection: security alarm, fire protection, and monitoring protection.

　　01 Anti-theft

　　The smart home system will automatically turn on the “away mode” or “sleep mode”, and users no longer have to worry about forgetting to close the doors and windows when going out or sleeping. It is no longer a new thing.

　　02 Fire protection

　　The kitchen smoke concentration control and alarm system, combustible gas leakage identification alarm technology, automatic water supply system, etc. are all things that owners should pay attention to when designing smart home solutions.

　　03 Monitoring and Guardianship

　　The monitoring system is also something that most smart homes need to consider when designing and installing. This system will automatically detect the elderly’s body temperature, pulse and other key health parameters, and send them to the smart home management platform and medical rescue center for rapid detection of suspicious and critical situations, and automatically activate the alarm system when necessary. It is very critical for villas with elderly people at home.

　　Wired Pet Immunity PIR Detector.jpg

　　What functions does the security alarm system include?

　　The security alarm system is one of the important components of smart homes. The intelligent residential security system has a high level of automation technology and complete functions, and is highly safe and reliable. The anti-theft and disaster prevention alarm devices of each household unit are connected to the monitoring computer of the community management center through a network system to achieve uninterrupted monitoring. Security alarms include: access control system, infrared, door magnetic alarm, fire alarm, gas leak alarm, emergency assistance, closed-circuit television monitoring, perimeter anti-intrusion alarm, intercom anti-theft door system, etc.

　　Alarm Motion Detectors.jpg

　　01 Access control system

　　A pair of door magnets are installed in the center of the door frame of the resident’s room door. The resident can open the door normally with a key. If illegal prying occurs, the access control system will send an alarm signal and transmit the signal to the community property management center through the home anti-theft host, telling the duty personnel which building and which household has what type of alarm. The duty personnel can dispatch security personnel to the scene in time to deal with it.

　　02 Infrared and door magnetic alarm

　　Install infrared detectors (or glass breakage detectors) and door magnetic switch alarms at the location of the door (or window) that is easy to invade. When the suspicious person pries the door (opens the door) or breaks the window to enter the room, the monitor enters the working state and sends an audible and visual alarm signal. At the same time, the specific location of the building, unit, floor, resident and the basic information of the owner of the household are displayed on the monitoring host through the monitoring network system.

　　03 Automatic fire alarm

　　Intelligent smoke detectors are installed in residential stairwells, elevator vestibules, and living rooms. The intelligent smoke detectors are connected to the anti-theft and disaster prevention monitoring network system of the community management center. When a fire occurs, the sound and light alarm is activated to notify the residents and the community management center to take prompt measures to ensure the safety of the residents’ lives and property.

　　04 Combustible gas leak alarm

　　Install gas leak alarms in the kitchen and bathroom. When there is a gas leak, the alarm is triggered and the pipeline valve is automatically closed, the sound and light alarm is activated, and it is transmitted to the community management center at the same time, notifying the residents and the community management center to take prompt measures to ensure the safety of the residents’ lives and property.