Engineering and technology research and experimental development; mold manufacturing; mold sales; automobile parts research and development; automobile parts and accessories manufacturing; motorcycle parts research and development; motorcycle parts manufacturing; household appliances research and development; household appliances manufacturing; electrical accessories manufacturing; plastic product sales; rubber product sales; sanitary products and disposable medical products sales; hardware product research and development; hardware product manufacturing; electronic product sales; metal material sales; metal product sales; chemical product sales (excluding licensed chemical products); plastic product manufacturing; rubber product manufacturing