精品国产电影久久九九,91久久精品日日躁夜夜躁,亚洲国产精品成人一二三四,欧美一区二区精品

Switching power supply is a power supply that controls the on and off of the power supply and maintains a stable output voltage. The switching power supply is generally composed of pulse width modulation (PWM) control IC and MOSFET. With the development and innovation of power electronics technology, the switching power supply technology Also constantly innovating.

RoHS is a mandatory standard established by EU legislation. Its full name is \"Restriction of Hazardous Substances\" (Restriction of Hazardous Substances). The standard has been officially implemented on July 1, 2006, and is mainly used to standardize the material and process standards of electrical and electronic products, making it more conducive to human health and environmental protection.

REACH is an abbreviation, which is the abbreviation of EU regulations \"Registration, Evaluation, Licensing and Restriction of Chemicals\". REACH testing exists in a wide range of industries. Anyone subject to REACH regulation must complete REACH legal obligations. It can be basically divided into substances, preparations, There are three major categories of articles, and the tested substances are substances that have been identified as SVHC. So far, the number of SVHCs has increased to 209.

WERCSmart is a supply chain security management system designed and developed by The WERCS company in the United States for large and medium-sized retailers. It can achieve: unified and effective management of a huge supplier network and products; security assessment of targets and existing products , Easy to filter. Such an authoritative review and appraisal procedure facilitates cooperation between suppliers and retailers more easily and conveniently. Suppliers with registered WERCSmart are undoubtedly the first choice for retailers to purchase.

SRRC certification is to strengthen the management of the import and production of radio transmission equipment. There are more and more wireless products in our market. When products are sold in the international market, they must meet the basic requirements of the market. SRRC certification is for wireless Electronic products undergo certain tests. Like Bluetooth devices on the market, wireless devices must undergo SRRC certification testing when they enter the market for sales.

In view of the current national policies and a series of urgent requirements, whether you are a complete machine manufacturer or a large battery and mobile power manufacturer, distributor or trader, as long as the product is sold in the domestic market, you need to do CQC or GB31241, GB/T 35590 report. Batteries, mobile power supplies, etc. must be listed on Taobao Tmall Jingdong, and the commissioned inspection reports of GB31241 and GB/T 35590 are also required. Now customers have more and more stringent requirements for supplier battery products and mobile power supplies. Battery products and mobile power supplies have undergone CQC certification, which is conducive to increasing the brand awareness of certified products, enhancing product market competitiveness, and increasing market share.

Wireless products exported to Japan (Bluetooth products, mobile phones, WIFI routers, drones, etc.) all require TELEC certification. TELEC certification is a mandatory product certification in Japan. The certification body is a registered certification body recognized by MIC in the scope of designated radio equipment. TELEC (Telecom Engineering Center) is the main registered certification body for the conformity certification of radio equipment in Japan. TELEC is also called MIC certification in Japan. TELEC is one of the designated certification bodies of MIC. First, it is collectively referred to as TELEC certification.

WERCSmart is a supply chain security management system designed and developed by The WERCS company in the United States for large and medium-sized retailers. It can achieve: unified and effective management of a huge supplier network and products; security assessment of targets and existing products , Easy to filter.