Manufacturing of plastic products; R&D of auto parts; Manufacturing of auto parts and accessories; Manufacturing of motorcycle parts; Sales of plastic products; Plastic surface treatment; Vacuum coating processing; R&D of household appliances; Manufacturing of household appliances; Sales of household appliances; Rubber product manufacturing; Sales of rubber products; R&D of new material technology; Mold manufacturing; Mold sales; Professional design services; Mechanical equipment R&D; General equipment manufacturing (excluding special equipment manufacturing); Spraying processing; Mechanical equipment sales