日韩欧洲精品无码AV,99国产午夜精品一区二区天美,精品久久免费一区二区三区四区,久久综合图区亚洲综合图区,久久久久亚洲AV免费观看,精子网久久国产精品,亚洲AⅤ无码一区二区二三区性色,亚洲精品国产电影,亚洲资源在线观看,婷婷五月丁香在线

TWS earphones do not have traditional physical wires. The left and right earphones form a stereo system through Bluetooth. The mobile phone can be connected to one receiving end. This receiving end will divide the stereo into another receiving end through wireless transmission to form a stereo system. TWS earphones are widely loved by people once they come out with the product\'s novel design, complete and rich functions, and convenient and quick operation. The future market development potential will also be huge. However, if TWS headsets want to enter the EU market, they need to apply for CE-RED certification.

The mobile power bank is our common power bank. It is a portable charger that can be carried by individuals and can store electric energy. It is mainly used for charging consumer electronic products such as hand-held mobile devices (such as wireless phones and notebook computers). When there is no external power supply. However, if the power bank wants to be sold on the shelves in my country, it is generally necessary to apply for the GB4943 quality inspection report.

The reader, that is, the radio frequency tag reading and writing equipment, is one of the two important components (tags and readers) of the radio frequency identification system. Readers are generally considered to be radio frequency identification or RFID read and write terminal equipment. It can not only read radio frequency tags, but also erase and write data, so it is called a reader. The reader can realize various functions such as communication with the computer network, so it is very important for many computer products. But generally, if you want to export this kind of wireless products to the United States, you need to apply for FCC-ID certification.

Digital player refers to software that can play video or audio files stored in the form of digital signals, and also refers to electronic device products that have the function of playing video or audio files. But generally this kind of products need to apply for CE certification if they want to enter the European market.

The power bank, also known as the power bank, is a portable charger that integrates power supply and charging functions. It can charge mobile phones and other digital devices anytime, anywhere or standby power. However, in general, PSE certification is required for such products to enter the Japanese market.

As the camera technology of mobile phones becomes more and more powerful, selfies have become a habit of most people, and the emergence of Bluetooth self-timers has brought great convenience to the public who love to take pictures, but generally this kind of Bluetooth Products that want to be sold in the domestic market need to apply for SRRC certification.

Car Bluetooth device is a Bluetooth electronic product with wireless Bluetooth technology. It is a wireless hands-free system designed in the car, which can make free calls with mobile phones and reduce the occurrence of traffic safety accidents. Now, more and more car owners are beginning to pay attention to the safety and speed of driving calls, making car Bluetooth hands-free equipment gradually popular. However, in general, this kind of product wants to enter the US market to apply for FCC-ID certification.

With the continuous development of technology, many electronic devices are gradually moving towards wireless. However, for product quality and safety considerations, these wireless devices generally need to undergo EMC testing before entering the market.