welding part 1. professional drawing service 2. co2 welding, painting 3. welding tooling design 4. proe/cad design --Hangzhou Hengli Metal Processing Co., Ltd Welding features: 1.Materials --Any metal material such as stainless steel,carbon steel,brass,copper,Aluminum,ect. 2.Surface treatment --All kinds of surface treatment are availabe.such as polishing,zinc plating,nickel plating,chrome ...