As a compositive Industrial chemical products with more than 20years of experience, we could supply: 1,: ZnO a),feed-grade zinc oxide ZnO>95% Zn>76.3% Pb<50ppm b), ceramic -zinc oxide ZnO>99% c),rubber-zinc oxide ZnO>95% 2: CuSO4 1,industrial-grade copper sulfate CuSO4 . 5H2O>96% 2, feed-grade copper sulfate CuSO4 . 5H2O>98% Pb<10ppm As<10ppm Cd<10ppm 3, manganese sulfate 4, zinc sulfate a),zinc sulfate heptahydrate ZnSO4.7H2O>98% ,Zn>22.5% b), zinc sulfate monohydrate ZnSO4.1H2O>98% ,Zn>35% Pb<10ppm As<10ppm Cd<10ppm 5, ferrous sulfate monohydrate 6, sodium sulfite: 93% ,96% 7,soda (sodium carbonate ) >99%