Wuxi Longda Metal Material Co., ltd was found in 1994 which covers an area of 200, 000 square meters, posssessing over 800 employees, with the annual production capability of 30, 000 tons , Longda has been qualified to the TUV AD2000 requirements DNV requirements .ISO 9001 qualiity system and ISO14001 Environmental Protetion certification. Our products are widely used in the fields of air conditioning, refrigeration, power stations, shipbuilding, seawater desalination, petrochemical and chemical industries, ect.