Contract processing of LCD screens, EL backlights, LED displays, flexible displays, membrane switches, touch switches, speaker switches, resistive touch panels, electronic labels, membrane panels, instrument panel panels, PMMA lenses, PC lenses, glass lenses, vehicle decals, wind power signage, labels, identification plates, shielding, sealing, and anti-static material die-cutting; Design, production, agency, and publishing of advertisements; Sales of electronic products, road safety signage, hardware and electrical appliances (excluding electric bicycles), cultural supplies, sports supplies, and auto parts; Technical services, technology development; Import and export of goods and technology, and agency import and export.