R&D of automobile parts; R&D of household appliances; R&D of motorcycles and parts; R&D of new material technology; Mold manufacturing; Plastic product manufacturing; Auto parts and accessories manufacturing; Household appliance manufacturing; Motorcycle parts manufacturing; Plastic surface treatment; Plastic product sales; Mold sales; Electronic product sales; Auto parts wholesale; Household appliance parts sales; Mechanical parts and spare parts sales; Plastic processing special equipment sales; Information technology consulting services; Labor services (excluding labor dispatch); Enterprise management.