Dear Sir,This is Richard Kuo from Taiwan. We are dealing with precious metal, especially for Tungsten. provide tungsten wire, sintered bars, powder, carbide, cobalt alloy...etc..Besides, used Rail also provided. Tungsten product having SGS certificate ...

We also sell copper with 99% purity, our specification is as followCopper (cu) 99. . Other materials may be present which are described below: Oxygen o2 --Sulfur s 4 ppmIron fe 2 ppmSilver ag 10 ppmLead pb 0. ppmNickel ni ppmSelenium se 3 ppmAntimony sb 1 ppmSilica ...