General projects: To lower limit branch business: Metal processing machinery manufacturing, hardware products manufacturing, mold manufacturing, laser marking processing; Hardware products wholesale; Hardware products retail; Sales of machinery parts and spare parts; Sales of building materials; Sales of packaging materials and products; Sales of metal products; Pump and vacuum equipment sales; Sales of teaching models and teaching AIDS; Mold sales; Internet sales (except sales of goods that require permission); Sales of electronic products; Technical services, technology development, technology consultation, technology exchange, technology transfer and technology promotion; Professional design services.