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.

On December 9, 2020, the European Committee for Standardization (CEN) released a new version of EN 71-2:2020. According to the plan, the standard will become the national standard of EU member states before June 2021, and the conflicting national standards will be withdrawn by December 2021 at the latest. In addition, the standard is expected to be included in the Official Journal of the European Union (OJEU) in 2021 to replace the current toy harmonized standard EN 71-2:2011+A1:2014.

On December 16, 2020, the European Commission issued Regulation (EU) 2020/2096, which extensively revised a number of requirements in the EU REACH Annex XVII Restricted Substance List.Regulation (EU) 2020/2096 will come into effect 20 days after the official gazette is published. The amendment to delete the 68th item of PFOA, its salts, and PFOA-related substances restrictions has become effective on July 4, 2020. The effective date of some amendments in Annex XVII of REACH is also stipulated in the amendment regulations.

The wireless walkie-talkie is a portable two-way radio transceiver, originally developed for military use. The main features include: half-duplex channel and press the button to transmit. The typical appearance is like a handheld phone, which is larger than an ordinary handheld phone, but only has a single device with an antenna on top. Hand-held transceivers have become very valuable communication tools for users such as police, emergency services, industry and commerce, and these services use dedicated frequencies. The walkie-talkie products use wireless transmission and wireless reception technology to transmit information. If you want to export to the United States, you need to apply for FCC-ID certification.