Auto parts and accessories manufacturing, motorcycle parts manufacturing, ferrous metal casting, non-ferrous metal casting, rubber product manufacturing, plastic product manufacturing, hardware product manufacturing, plastic product sales, rubber product sales, metal surface treatment and heat treatment processing, plastic surface treatment, auto parts research and development, motorcycle and parts research and development, mold manufacturing, mold sales, general parts manufacturing, mechanical parts and parts processing, mechanical parts and parts sales, new material technology research and development, goods import and export, technology import and export, technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion