Yearly Archives: 2025

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According to a report by the TASS news agency on March 18, Russian Presidential Press Secretary Peskov told the media on the 18th that Russia does not agree with the US authorities ‘evaluation of the Russian presidential election and is not prepared to take this evaluation seriously.

Earlier, an official of the White House National Security Council said that the U.S. authorities believed that the Russian presidential election was neither free nor fair.

Reported that Peskov pointed out: We absolutely disagree with this evaluation. In a speech to the media late on the 17th, President Putin said that this evaluation was completely unexpected and foreseeable.

Peskov also said that the United States has been deeply involved in the Ukraine conflict and is in fact a country at war with Russia. Russia certainly does not expect it to make other evaluations. He also said that what Russia needs to reiterate is that we never agree with them, which may not be an opinion we are prepared to take seriously or that is important to us in these days.

Russia’s presidential election was held from March 15 to 17, and some regions of Russia adopted remote electronic voting for the first time. After counting 9943% of the votes, the Russian Central Election Commission announced that current President Vladimir Putin was far ahead in the general election with a vote rate of 8732%. (Compiled by Liu Yang)

　　As we all know, MB6F is a rectifier bridge stack, which encapsulates SOP-4. Its function is to convert alternating current whose level fluctuates around zero into unidirectional direct current through the unidirectional conduction characteristics of diodes, and its function is rectification. Please see below for specific parameters and pin diagram.To some extent, Integrated Circuits (ICs) Our development has surpassed many peer businesses, but it has never stopped moving forward. https://www.xinyun-ic.com/

　　MB6F Specification: Click to download

　　High Surge Overload Rate: 30A Peak

　　Maximum repetitive peak reverse voltage: 600v V.

　　Maximum DC blocking voltage: 600v V.

　　When current =1.0A, forward voltage drop: 1.0V.

　　Maximum reverse DC current ta = 25≧: 5.0ua.

　　Rated DC blocking voltage per leg ta = 125≧: 500.0ua.

　　Working temperature and storage temperature range: -55 to +150≧

　　Weight: 0.078 ounces, 0.22 grams

　　High temperature welding guarantee: 260≧/10s.

　　Polarity: “-“indicates the cathode end (see the figure below).

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According to a report by the German News TV channel on March 14, a latest report released by the American Institute for War Studies stated that due to lack of ammunition and supplies, the Ukrainian defense line may be more fragile than the impression given by the relatively slow advancement of the Russian army in various places.

The report said that in order to curb the continued advancement of the Russian army, Ukraine currently has to use the small amount of existing materials as efficiently as possible. The Institute for War Studies wrote: The Ukrainian army concentrated its supplies in the areas of the line where the Russian army encountered the most fierce attack, which would lead to poor defense in other areas, allowing the Russian army to launch surprise attacks there and achieve breakthroughs.

The American think tank also quoted a report in the magazine Der Spiegel. A Ukraine officer said in a report that in secondary battlefields such as Kharkiv or Vukhredar, which are currently receiving little attention, the situation of troops, weapons and ammunition is very bad. An artillery commander said: We can’t hold on like this for long. The analysis report wrote that the reason why some Ukrainian troops were able to hold their positions with limited ammunition and supplies was only because the Russian army did not attack with all its strength.

The Institute for War Studies warned that the Russian army did not attack areas where Ukraine was extremely poorly guarded, concealing the risks there. In other words, as long as the Russian army launches large-scale attacks in these areas, it will expose the current situation that the Ukrainian army is unable to resist due to lack of ammunition. Ukraine’s Armed Forces Commander-in-Chief Sersky warned on a social platform telegram that Russian troops may break into the depths of the Ukrainian defense line.

The Institute for War Studies said the words of Sersky and other Ukrainian commanders suggested that if the Russian army stepped up its offensive, it could break through and shake previously stable areas in a short period of time.

The report concluded that the current defense line is likely to be unstable. It is crucial for the West to transfer resources to the Ukrainian army as soon as possible to prevent Russian troops from waiting for opportunities to break through weak defensive areas on the front line. (Compiled by Wang Ting

　　The detection of lithium-ion batteries for electric bicycles is a key step to ensure battery performance, safety and prolong service life. The following are detailed methods for testing lithium-ion batteries for electric bicycles:At the same time, cheap e-bike battery It is no longer a relatively unfamiliar industry, and it enters the public’s sight more and more frequently, gaining more attention and recognition. https://www.chamrider-battery.com/

　　First, the appearance inspection

　　Observe the battery case: check whether the battery case is intact, and there are no depressions, cracks, scratches, pits or leakage. These defects may lead to electrolyte leakage, short circuit or battery performance degradation.

　　Check the size of the battery: confirm whether the size of the battery meets the design specifications. The size deviation may lead to assembly problems or affect the performance of the battery.

　　Check the battery connection port: Make sure that the battery connection port is clean, free from corrosion or oxidation, which helps to maintain good electrical connection.

　　Second, the label inspection

　　Product identification: confirm whether the battery has product identification (or invoices and other purchase vouchers) and whether the nominal voltage, rated capacity and other parameter information are clearly identified.

　　Safe service life: check whether the battery has reached the safe service life specified by the manufacturer, and the battery beyond the service life may have potential safety hazards.

　　Voltage marking: Make sure that the nominal voltage of the marking does not exceed 48V, which is the safety standard for lithium-ion batteries for electric bicycles.

　　Third, the performance test

　　Internal resistance test: use an AC internal resistance tester to measure the internal resistance of the battery pack to ensure that the internal resistance is not greater than 0.5Ω. Small internal resistance means low energy loss and high efficiency, while high internal resistance may lead to battery heating and performance degradation.

　　Maximum output voltage test: After the lithium-ion battery is fully charged with the original charger or universal charger, measure the battery output voltage to ensure that it does not exceed 60V.

　　Discharge capacity decay rate test: measure the discharge capacity of lithium-ion battery and compare it with the rated capacity to confirm that the capacity decay rate does not exceed 50%. Too high capacity decay rate may mean that the battery is aging and its performance is degraded.

　　Fourth, charge and discharge performance testing

　　Endurance test: Install the fully charged battery on the electric bicycle and completely discharge the battery. Observe the change of mileage and remaining power to evaluate the battery life.

　　Charge-discharge cycle test: in a suitable test environment, the performance of the battery under different working conditions is evaluated by charge-discharge test instruments. The test can include cyclic charge and discharge, fast charge and high temperature charge and discharge.

　　At Shenzhen Jingsuguang Technology Co., Ltd., we specialize in advanced pump technologies, and micro vacuum pumps are at the core of many innovations in environmental monitoring, particularly in VOC (Volatile Organic Compounds) Online Analyzers. These compact yet powerful pumps have revolutionized how VOCs are sampled and analyzed, contributing to more accurate air quality assessments.Not only does it perform well in data, suction pump In the market share, it is also gradually expanding, so that more people can benefit. https://www.dc-pump.com/

　　Micro vacuum pumps are vital to VOC analyzers, providing the consistent vacuum pressure needed to ensure reliable and continuous air sampling. This article will explore how these pumps work, their significance in VOC analyzers, and what factors to consider when selecting the right one for your application.

　　How Do Micro Vacuum Pumps Work in Portable VOC Analyzers?

　　In small, portable VOC analyzers, the micro vacuum pump plays a multifaceted role, enhancing the device¨s performance in the following ways:

　　Air Sampling Precision: The micro vacuum pump creates a controlled vacuum that draws air samples into the analyzer. This consistent airflow is critical for the accurate detection and measurement of VOCs.

　　Maintaining Vacuum Stability: Steady vacuum levels are crucial for effective VOC analysis. The micro vacuum pump adjusts its operation to maintain these levels, even in fluctuating environmental conditions.

　　Energy Efficiency: Designed to minimize power consumption, these pumps help extend the battery life of portable VOC analyzers, ensuring longer operation in the field.

　　Integration with Control Systems: Advanced portable analyzers often feature digital control systems, enabling precise management of the pump¨s operation, including flow rate adjustments and on-off cycles.

　　Compact and Quiet Operation: With space at a premium in portable devices, micro vacuum pumps offer a small footprint while operating quietly！ideal for indoor and sensitive applications.

　　Reliability Across Environments: Whether used in industrial settings or urban environments, these pumps are designed to perform reliably under varying conditions, ensuring consistent functionality regardless of temperature or air pressure changes.

　　In essence, micro vacuum pumps are indispensable to the efficiency, accuracy, and versatility of portable VOC analyzers.

　　Choosing the Right Micro Vacuum Pump for VOCs Analyzers

　　Selecting the right pump for a VOC analyzer requires a deep understanding of the device¨s operational needs. Factors such as the type of VOCs, sensitivity levels, and environmental conditions play a crucial role in this decision.

　　Diaphragm Micro Pumps: Ideal for applications requiring low-to-medium flow rates, these pumps operate oil-free, ensuring that air samples are not contaminated, which is essential for accurate VOC analysis.

　　Rotary Vane Micro Pumps: Best suited for applications needing higher vacuum levels, these pumps are more powerful but may produce more noise and occupy more space than diaphragm pumps.

　　Piezoelectric Micro Pumps: If your analyzer requires very low flow rates or is ultra-compact, piezoelectric pumps offer superior precision, making them ideal for detecting trace VOC levels.

　　Careful consideration of these factors ensures that the selected pump meets the specific demands of your VOC monitoring system.

　　The Operating Principles of Micro Diaphragm Vacuum Pumps

　　The structure and operating mechanism of micro diaphragm vacuum pumps make them particularly suitable for VOC analyzers:

　　Flexible Diaphragm: Typically made from durable, chemical-resistant materials like PTFE or EPDM, the diaphragm moves to create the necessary vacuum for air sampling.

　　Chamber and Valves: The pump¨s chamber is divided by the diaphragm, creating a vacuum when it moves upward and pushing air out through the outlet valve on the downward stroke.

　　Motor Mechanism: The diaphragm is driven by an electric motor that converts rotary motion into the up-and-down movement of the diaphragm.

　　Efficiency and Control: These pumps offer quiet, energy-efficient operation and can be finely controlled to deliver consistent airflow, essential for VOC analysis accuracy.

　　Micro diaphragm pumps are the perfect choice for portable analyzers due to their balance of size, reliability, and performance.

　　How to Select the Right Micro Vacuum Pump

　　When choosing a micro vacuum pump for VOC analyzers or similar devices, consider the following factors:

　　Flow Rate: Choose a pump with precise flow control for sensitive applications, such as laboratory or medical settings.

　　Vacuum Level: Ensure the pump can deliver the necessary vacuum strength, particularly for industrial applications.

　　Portability: For handheld or field equipment, prioritize compact, lightweight pumps like diaphragm or piezoelectric models.

　　Power Consumption: In battery-operated systems, opt for low-power pumps to prolong device operation.

　　Environmental Conditions: Select a pump that can withstand the operational stresses, such as exposure to chemicals or extreme temperatures.

　　Noise Levels: For applications where noise is a concern, such as indoor air monitoring, choose quieter pump options.

　　Material Compatibility: Ensure the pump¨s materials are compatible with the media being handled to avoid damage or contamination.

　　Maintenance and Durability: Opt for pumps designed for long life and ease of maintenance to minimize operational costs.

　　At Shenzhen Jingsuguang Technology Co., Ltd., we provide tailored advice to help you find the best micro vacuum pump for your VOC monitoring needs.

　　Friends or customers have been asking me what is the difference between Schottky diode SR540 and SB540. Today we will talk about this problem.Therefore, pcb instant quote Only then will more and more pump owners cheer for it and spread the value and function of the brand. https://www.xinyun-ic.com/

　　In fact, the parameters of SR540 and SB540 are the same, both of which are 5A 40V. As for why the models are different, it is because different manufacturers have differences in screen printing, which means they don’t want to repeat with others and have their own uniqueness. Please see below for specific parameters.

　　Maximum reverse repetitive peak voltage: 40V

　　Maximum DC blocking voltage: 40V

　　Maximum average forward rectified current: 5.0A

　　When current =5.0A, voltage drop: 0.55v

　　Maximum reverse DC current ta = 25≧: 0.5ma.

　　Working temperature range: -65 to +150≧

　　Storage temperature: -65 to +150≧

　　Reverse recovery time: less than 10ns (nanosecond)

　　High temperature welding: 250c/10 sec, 0.375 “(9.5 mm) lead length, 5 lbs (2.3kg) tension.

　　Package: DO-27/DO-201AD

　　While standard fasteners are commonly used in many industries, non-standard fasteners, particularly customized and custom-designed fasteners, have become essential in meeting specific application requirements. In this article, we will explore how non-standard fasteners can significantly improve product quality and why businesses are increasingly turning to specialized fastener solutions provided by non-standard hardware suppliers.pass non-standard fastener factory It can be seen from the present situation that the market prospect is relatively broad, which is conducive to our reference and investment. https://jieruifasteners.com/

　　non-standard hardware suppliers.jpg

　　1. Understanding Non-Standard Fasteners

　　Non-standard fasteners are custom-made or specially designed fasteners that deviate from the typical industry specifications. These fasteners are crafted to meet unique design and performance requirements that standard fasteners cannot fulfill. Non-standard fasteners can come in a variety of shapes, sizes, materials, and designs that are tailored to specific applications. The ability to customize these fasteners allows manufacturers to solve complex design challenges, improve the functionality of their products, and ensure higher levels of durability.

　　2. The Role of Customized Fasteners in Product Quality

　　Customized fasteners are often essential when dealing with specific materials, tight tolerances, or challenging environments. Here are some ways in which they contribute to improved product quality:

　　Tailored Fit for Precise Applications

　　Customized fasteners are designed to fit exact specifications, providing a more secure, accurate, and long-lasting connection. When the right fastener is used, it ensures that all parts of a product are held together correctly, minimizing the risk of failure due to loose or misaligned components.

　　Enhanced Durability and Performance

　　Custom-designed fasteners are made from materials chosen to withstand particular environmental conditions such as high temperature, moisture, corrosion, or vibrations. The selection of high-quality materials ensures that the fasteners endure the wear and tear of demanding applications, which directly improves the durability and performance of the end product.

　　Improved Safety and Reliability

　　A critical factor in product quality is safety. Non-standard fasteners are engineered to meet specific safety standards, ensuring the integrity of critical components. Whether it¨s for aerospace, automotive, or medical devices, using non-standard fasteners helps maintain the structural integrity of the product, reducing the risk of product failure and increasing its reliability.

　　Reduced Maintenance Costs

　　Customized fasteners that are designed for a specific purpose often require less maintenance over time. By ensuring a perfect fit and optimal performance, manufacturers can reduce wear and tear, leading to lower maintenance costs and longer product lifecycles. This ultimately results in a better overall product quality and reduced long-term costs.

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Beijing, July 15 (Reporter Xie Xiyao) A spokesperson for the Ministry of Commerce said on the 15th that in order to safeguard the development rights and interests of China’s new energy vehicle industry, on March 26, China resorted to measures such as the U.S. Inflation Reduction Act on new energy vehicle subsidies. Respond to the WTO dispute settlement mechanism. As the United States failed to reach a solution through consultations with China, on July 15, China submitted a request to the WTO to establish an expert group.

The development of China’s new energy vehicle industry has made important contributions to global energy green transformation and climate change response. The spokesperson said that the U.S. Inflation Reduction Act takes the use of products from specific regions such as the United States as a prerequisite for subsidies, excludes products from WTO members such as China, artificially sets up trade barriers, and drives up the cost of green energy transformation. No matter how they are packaged and beautified, they cannot change the discriminatory, protectionist and violation of WTO rules of the subsidies involved. China resolutely promotes litigation procedures in order to safeguard the authority and effectiveness of the multilateral trading system with the WTO at its core and safeguard the joint international efforts to address climate change.

The spokesperson said that China agrees that WTO members implement industrial subsidies in a manner consistent with WTO rules, support green energy transformation, and promote economic and social development. China once again urges the United States to abide by WTO rules and stop abusing industrial policies to undermine international cooperation on climate change.

　　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.Therefore, shipping agent Only then will more and more pump owners cheer for it and spread the value and function of the brand. 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.

　　Micro vacuum pumps have become essential components in medical aesthetics and treatments due to their compact size, efficiency, and ability to generate negative pressure or suction. These pumps are commonly found in devices designed for skin care, body contouring, post-operative care, and more. Let¨s explore the various benefits and applications of miniature vacuum pumps in medical aesthetics and how they contribute to effective treatments.On the other hand, diaphragm pump It also brings tangible benefits to everyone and feels useful. It is a model of the industry. https://www.dc-pump.com/

　　Benefits Of Miniature Vacuum Pumps In Medical Aesthetics And Aesthetic Treatments

　　1. Improved Blood Circulation and Collagen Production

　　Miniature vacuum pumps help enhance blood flow, delivering essential nutrients to the skin. This can stimulate collagen production, resulting in firmer, smoother, and more youthful-looking skin. This is particularly beneficial for treating wrinkles, fine lines, and other signs of aging.

　　2. Increased Lymphatic Drainage and Reduced Swelling

　　By promoting lymphatic drainage, miniature vacuum pumps help reduce swelling and inflammation. This is especially useful for post-surgical recovery, improving conditions such as lymphedema and venous insufficiency by removing lymphatic fluid from tissues.

　　3. Removal of Dead Skin Cells for Fresh, Radiant Skin

　　In treatments like microdermabrasion, miniature vacuum pumps help to gently exfoliate the skin by removing dead cells and promoting cell regeneration. This leads to improved skin texture, clarity, and radiance.

　　4. Reduction of the Appearance of Cellulite

　　Miniature vacuum pumps are also employed in body contouring and cellulite reduction treatments. By applying suction to massage and manipulate the skin, these pumps help break down cellulite and smooth out dimpled skin, improving its overall appearance.

　　5. Promotion of Post-operative Healing and Pain Reduction

　　In post-operative care, miniature vacuum pumps promote healing by improving blood circulation and lymphatic drainage. This accelerates recovery and alleviates pain, making them ideal for treatments following liposuction and other surgical procedures.

　　The Benefits Of Negative Pressure Equipment In The Medical Industry