Business scope: engaged in the production and processing of lithium-ion batteries, fine blanking films, precision cavity films, special electronic equipment, test instruments, LED rectifiers, precision rotating shafts, electronic connectors, and spare parts related to the above products, printing, packaging and decorating printed matter, selling self-produced products and providing related after-sales services and related maintenance services. (Projects subject to approval according to law can only be operated after approval by relevant departments).