Manufacturing and sales: mining machinery and equipment, construction machinery and equipment, lifting and transportation equipment, environmental protection equipment; sand casting and spare parts processing and sales; design, manufacturing, sales and installation: lubrication systems and equipment, hydraulic machinery and equipment, hydraulic components, hydraulic complete sets of control system equipment, mechanical molds, high and low voltage power components, high and low voltage power complete sets of equipment electrical appliances and power station auxiliary machinery, electrical complete sets of equipment, high and low voltage complete sets of switches and