Rubber product manufacturing, plastic product manufacturing, metal daily-use product manufacturing, general parts manufacturing, mechanical parts and components processing, information consulting services (excluding licensed information consulting services), metal material sales, rubber product sales, plastic product sales, electrical equipment sales, metal product sales, office equipment sales, labor protection product sales, lubricating oil sales, hardware product retail, mechanical parts and components sales, pneumatic power machinery and components sales, gas compression machinery sales, gas, liquid separation and purification equipment sales, leather product sales, electronic measuring instrument sales, mechanical and electrical equipment sales, battery sales, glass fiber reinforced plastic product sales, railway locomotive and vehicle parts sales, electrical equipment repair, general equipment repair, specialized equipment repair, power electronic components sales, bearing sales, bearing, gear and transmission component sales, specialized chemical product sales (excluding hazardous chemicals), power electronic components manufacturing, electronic components retail, dye sales, optoelectronic device sales, electronic specialized equipment sales, glass fiber and product sales, electronic product sales, supply application instrument sales, optical fiber sales, coating sales (excluding hazardous chemicals), electrical accessory manufacturing, metal structure manufacturing, metal material manufacturing, synthetic material sales.