... 2.ISO9001/14001/18001 3.AWS, GB, DIN, Copper brazing alloy HVAC/R, Plumbing and other industries rely on quality materials ... from high quality materials made to the international Standard like: G.B. for China, AWS for U.S.A., JIS for Japan, DIN for Germany ... many forms as well as solders and fluxes. Copper brazing alloy for refrigerator