Supplier: 1.ferrous sulphate heptahydrate 19% 2.magnesium sulphate heptahydrate 9.6% 3. zinc sulphate monohydrate 33% ,4.copper sulphate crystal 24%
Services:
Buyer: 1.magnesium oxide 2.sulphur powder 99.99% 3.calcium nitrate granules 4.potassium humate shiny flakes 98%