Business scope includes: General items: General equipment manufacturing (excluding special equipment manufacturing); General mechanical equipment installation services; Mining machinery manufacturing; Mining machinery sales; Manufacture of special equipment for environmental protection; Sales of special equipment for environmental protection; Installation and maintenance of specialized machinery for agriculture, forestry, animal husbandry and by-fishery; Manufacturing of specialized machinery for agriculture, forestry, animal husbandry, by-fishery; General purpose component manufacturing; Machine parts, parts processing; Sales of special chemical products (without dangerous chemicals); Manufacturing of experimental analytical instruments; Manufacturing of bearings, gears and transmission components; Gear and gear reduction, transmission manufacturing; Metal structure manufacturing; Building decoration, plumbing parts and other building metal products; Building decoration materials sales; Manufacture of daily chemical products; Sales of daily chemical products; Machinery and equipment leasing; Special equipment repair