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: supper grade/ first grade/up to grade 1) MgO%: 41-45 /41-45/38 2) CaO%: 0.43/0.7/1 3) moisture%≤ 2/3/4 4) Fe %: ≤0.2 5) Chloride(Cl): %>= 0.1/0.15/0.3 6) Screening residues(through 150um mesh) %≤ 0.025/0.03/0.05 7) Insoluble in HCl%: ≤ 0.1/0.15/0.2 8) Soluble Chloride(Cl): = ---- 9) Heavy metal≤ --- 10) Na% : --- 10) Kalium%: --- 11) Surface density %≤0.12/0.13/0.14 Usage: It use as the reinforcer and stuffing in the rubber industry. It can use to make adiabatic, fireproofing and heat preservation products, using in high class glasses, porcelain enamel and ceramic to make the surface brightness. It also uses to product Magnesium Salt, paint, pigment, daily use cosmetic shipbuilding and boiler manufacture Packing: Packed in woven bags with liner 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.