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