... , 56.5. Welcome your enquiries. Specialty supply ZINC CARBONATEThe Zinc Carbonate 57.5%, 57.0%, 56.5%, etc.Molecular Formula: ZnCO3 ... chemical fertilizer industries as the main material of the desulfurizer and the catalyst. On the rubber product, the paint, the medicine ... : Special requirements should be decided through negotiation between the seller and the buyer. We trust here, choose here! What are ...