With its convenient unlocking method and practical functionality, smart door locks have gradually replaced ordinary door locks and become the first choice for households in home improvement. Not only that, smart door locks are also widely used in hotels, offices, real estate, homestays and other markets. , but generally these wireless products need to apply for SRRC certification if they want to be produced and sold in China.

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The navigator is an intelligent handheld car navigation system, which contains an electronic map. Its main function is to carry out route navigation, and it also has a voice effect. It can not only plan our travel routes, but also help us find hotels, leisure and entertainment, government offices and other places. However, as an electronic product with Bluetooth wireless function, the navigator needs to apply for SRRC certification if it is to be produced and sold in the Chinese market.

A USB fan is a miniature electric fan applied to the USB interface of a desktop computer or a notebook computer. In today\'s market, such small fans are generally divided into two types: rechargeable USB type and battery-powered type. The small USB charging fan is simply connected to a computer or power bank through a USB cable to supply power and then work normally. This type of fan is mostly used in offices. However, in general, if such products want to be listed on domestic e-commerce platforms, they need to provide third-party quality inspection reports.

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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.