Mold manufacturing; mold sales; plastic product manufacturing; metal material sales; non-ferrous metal alloy sales; auto parts retail; auto parts wholesale; auto parts research and development; motorcycle parts manufacturing; motorcycles and parts wholesale; motorcycles and parts retail; motorcycles and parts research and development; mechanical equipment sales; mechanical equipment research and development; hydraulic power machinery and component manufacturing; chemical product sales (excluding licensed chemical products); synthetic material sales; import and export of goods; technology import and export.