The wireless charger is a device that uses the principle of electromagnetic induction for charging. Its principle is similar to that of a transformer. By placing a coil at the transmitting and receiving ends, the transmitting end coil sends an electromagnetic signal to the outside under the action of power, and the receiving end coil receives the electromagnetic signal. Signal and convert electromagnetic signal into electric current, so as to achieve the purpose of wireless charging. Wireless charging technology is a special power supply method that does not require a power cord and relies on electromagnetic wave propagation, and then converts the electromagnetic wave energy into electrical energy, and finally realizes wireless charging. However, the export of wireless chargers to Europe requires CE certification before they can be sold.

On January 19, 2021, the European Chemicals Agency (ECHA) formally added the two newly reviewed substances to the list of SVHC candidate substances. So far, the SVHC candidate list includes 24 batches of 211 substances.

With the continuous development of technology, many smart electronic products are moving towards wireless. Wireless products can effectively make up for the shortcomings of wired products and are welcomed by most people. However, different countries where wireless products are exported need to apply for different certifications. Let\'s take a look at the EU CE certification and US FCC certification that wireless products want to enter the European and American markets!

The mobile power bank (Power Bank) is a combination of batteries or battery packs, corresponding circuits and casings. It can provide a non-fixed power system with stable DC output and a power bank that does not exceed 18kg and can be carried by the user. Mobile power is commonly known as power bank; it is a portable charger that integrates power supply and charging functions. It can charge mobile phones, tablet computers and other digital devices anytime and anywhere. However, when the mobile power supply encounters collision, extrusion, high temperature, etc., it is very prone to smoke and fire due to the internal short circuit of the lithium battery. In order to ensure the quality and safety of mobile power, before the mobile power enters the market, it needs to be tested by an authoritative third-party testing and certification organization to verify the product quality and safety.

A wireless keyboard refers to a keyboard that performs wireless transmission through the Bluetooth protocol and performs Bluetooth communication within an effective range (within 10m). It is a short-distance radio technology. The use of \"Bluetooth\" technology can effectively simplify handheld computers, notebook computers and Communication between mobile communication terminal devices such as mobile phones. But if the wireless keyboard wants to export to the United States, it needs to apply for FCC certification.

Bluetooth watch is a kind of watch with Bluetooth function, it is a kind of multi-functional smart communication watch. Through the Bluetooth function of the watch, it can be used after pairing and connecting with the Bluetooth phone; when the phone has a call, the Bluetooth watch will Vibration alert, caller ID display, 24-hour time display. However, for any product to be sold in the market, there will be corresponding certification regulations. For example, wireless electronic products such as Bluetooth watches must apply for TELEC certification to enter the Japanese market.

The Bluetooth printer is the application of Bluetooth technology to the printer to get rid of the inconvenience caused by the printer connection and realize wireless printing. This not only can effectively reduce the unpleasant cables on the desktop, but also can move the printer away from the host. Move and place it in a suitable position in the room. However, if Bluetooth printers want to be sold in China, they must apply for SRRC certification.

The repeater is a portable machine that can store the sound and play it repeatedly. Mainly on the basis of the portable radio and cassette recorder, a multi-function language signal access device formed by adding a micro-processing chip and a digital storage chip. It converts the analog signal into a digital signal while the tape is playing, and stores it in the digital memory chip; in the replay state, the signal in the digital memory is converted into an analog signal, and the sound is restored by the speaker after power amplification. However, repeaters exported to Europe must apply for CE-RED certification.