Audio usage standard: GB8898- Safety requirements for household and similar general purpose electronic and related equipment powered by power grids;

Inspection items: marking, temperature rise under normal working conditions, temperature rise under high temperature environment, risk of electric shock under normal working conditions, insulation requirements, fault conditions, mechanical strength, components connected to the power grid, components, connection terminals, external flexible wires, electrical connections and mechanical fixation, mechanical stability;

3. Sample: Two samples (sets), four power transformers (one of which is not sealed), ten switch node capacitors, 48 fuses, three power switches, three power sockets, three power cords with plugs, and ten thermal fuse links are required for the application of a safety and quality license;

The regular sampling quantity for using "safety sign" products is 1 independent unit equipment and 1 set of combination audio equipment;

4. If there are individual items in the evaluation and inspection items of safety performance that are not qualified but are easy to improve, they can be rectified and re sampled for inspection. If any item is found to be unqualified during the re inspection, it will be deemed as unqualified.