General equipment manufacturing (excluding special equipment manufacturing); Metal processing machinery manufacturing; General parts manufacturing; Industrial robot manufacturing; Mechanical parts and components processing; Fastener manufacturing; Additive manufacturing equipment manufacturing; Additive manufacturing; Mold manufacturing; Railway rolling stock parts manufacturing; Urban rail transit equipment manufacturing; High-speed rail equipment and parts manufacturing; Hardware product manufacturing; Electric motor manufacturing; Motor manufacturing; Power electronic components manufacturing; Non-ferrous metal alloy manufacturing; Power transmission and distribution and control equipment manufacturing; Door and window manufacturing and processing; Metal structure manufacturing; Electrical equipment sales; Rail transit special equipment, key systems and parts sales; Rail transit engineering machinery and parts sales; Graphite and carbon products sales; Mechanical parts and components sales; Metal products sales; Power electronic components sales; Metal materials sales; Non-metallic mineral and product sales; Non-ferrous metal alloy sales; Metal ore sales; General equipment repair; Electrical equipment repair; General mechanical equipment installation services; General cargo warehousing services (excluding hazardous chemicals and other items requiring licensing approval).