R&D and sales of ultrasonic cleaning equipment, ultrasonic welding equipment, sewage treatment equipment, pure water purification equipment, automotive electrophoresis equipment, painting equipment, water supply equipment, electromechanical equipment, energy-saving and environmental protection equipment and environmental protection projects, automated assembly line equipment, electrical automation, powder eruption equipment, oven equipment, heating systems, laboratory equipment, penetrant testing, and non-destructive testing equipment; medical equipment, machined parts, hardware accessories, hardware materials, stainless steel (special), copper, aluminum product production, installation and technical consulting; sales of robotic arms.