Shanghai GreatMark Precision Machinery Co., Ltd. was founded in 2004 in China , we handle these products: laser welding wire , argon arc welding wire , welding rod and other accessories of laser welding , we are the first sales agent of Germany laser welding wire in China , and we also have the services of laser welding processing since 2005 . Now, we have agented these German brands : Quada, DSI, Improbond . Our customers all over the China(main land), Hong Kong , Macao , Taiwan , and other countries , such as Russia , korea, and so on . GT is our own brand , including GT laser welding wire , GT argon arc welding wire and welding rod . Some of them made in China with the German material , some of them are imported from Germany . they are of high qulity and resonable prices .