Since 1986, we have produced Zinc oxide, MgO and MgCo³ for over 20 years and become one of the largest manufacturer of China in this field. Technical specifications: 1) ZnO: ≥99.7% 2) Zn%: 0 3) PbO (as Pb): ≤ 0.037% 4) MnO (as Mn): ≤0.0001% 5) CuO (as Cu): ≤ 0.0002% 6) Insoluble in HCl: ≤ 0.006% 7) Losses in ignition: ≤0.2% 8) (45um mesh) residues: ≤0.1% 9) Water soluble matter: ≤ 0.1% 10) Volatility at 105℃: ≤ 0.3% Usage: 1) Used as an activator for vulcanization accelerators and as a reinforcing agent in natural and synthetic rubber 2) Used as a pigment in white paints, coatings and inks 3) Used as a mildewstat and acid buffer in paints 4) Used as a zinc dietary supplement for humans 5) Used us a fertilizer supplement and so on Packing: Packed in woven bags with liner N.W.: 25kg Also, we can provide you all kinds of goods base on your demand. Pls let me know your specific requirements for quotations, thirst for long-terms and stable cooperation with you. For more information pls e-mail/phone me.