... optic conversion efficiency 2,Long service life 3,Factory price 4.Specially designed for mould industry High power mould laser welding ... from the Britain.Laser welder is corrosion resistant and high temperature resistant, and has 8-10 years service life ... steel, nickel tool steel, high grade steel, steel alloy, high tenacity aluminum alloy, etc.Machine High power mould laser welding machine 330W ...