WEISHIDA Superfine active copper oxide for industry
https://www.wsdty.com/product/copper-oxide/
Element Standard% Concentration% Content % ≧97 97.06Lead(Pb)% ≦0.0005 0.0003Acid insoluble% ≦ 0.003 0.0013Fe % ≦0.003 0.0004Nickel (Ni)% ≦0.001 0.0004Chlorine(cl)% ≦0.0015 0.0007Zinc(Zn)% ≦0.003 0.0005