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As the accessories of mobile phones, electric toys, tablet computers and other terminal products, the safety of batteries needs to be considered in conjunction with these terminal products. Therefore, many terminal product customers will require their parts and components to be added for the safety of their own products. Paste the CE mark so that its products can better meet the requirements of the relevant directives. The CE certification of battery products obtained by the designated agency of the European Union can maximize the trust of consumers and market supervision agencies, and can effectively prevent the occurrence of irresponsible allegations. In the case of litigation, the CE certification of the EU-designated agency will also become technical evidence with legal effect.

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The power adapter is a power supply conversion device for small portable electronic equipment and electronic appliances. It is generally composed of a casing, a power transformer and a rectifier circuit. According to its output type, it can be divided into AC output type and DC output type; according to the connection method, it can be divided into wall plug and desktop. Since mobile PCs do not have batteries, power adapters are particularly important. However, in general, if such products want to be listed on domestic e-commerce platforms, they need to apply for a quality inspection report.

ErP certification is the energy efficiency certification part of CE certification, which was enforced in 2013. ErP = Energy-related Products, that is, energy-related products. Refers to any product that has been placed on the market and/or has been delivered for use and which has an impact on energy consumption during its use. It includes those components of energy-related products covered by the ErP Directive, which are put on the market and/or delivered as independent components for the end user, and which shall be capable of being independently assessed for their environmental impact. The ErP Directive is the new European CE marking regulation. As a CE marking directive, the requirements of the ErP directive will be implemented together with other requirements such as safety regulations, electromagnetic compatibility, radio and so on.

A Bluetooth digital device is a digital device with Bluetooth function. Nowadays, many electronic devices have Bluetooth function, and Bluetooth digital products can be seen everywhere in our lives, such as smart phones, Bluetooth headsets, Bluetooth speakers, Bluetooth printers, etc. But generally, if this kind of Bluetooth digital product wants to be put on the domestic market, it needs to apply for SRRC certification.

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Home audio refers to the audio configured for playback, which mainly plays the role of providing entertainment and relaxation for the family. Nowadays, many families are equipped with their own home audio, but generally, if such products are to be exported to the EU market, CE certification is required.

Amplifier generally refers to power amplifier, and power amplifier is the abbreviation of power amplifier, which generally refers to one of the most basic equipment in the audio system, commonly known as \"amplifier\". The weak electrical signal from the mixer) is amplified to drive the speaker to produce sound. However, in general, if such products want to export into the US market, they need to apply for FCC certification.