... BaoDing ZhongBao Chemical Co., Ltd. is a professional manufacturer of magnesium salt and bromine series flame retardant with a high popularity ... standard. And we have passed the ISO9001:2000. The Magnesium Nitrate have the permit of the medicine produce and the ... market, ascend into the cavalcade in world chemical enterprise of magnesium salt, become the manufactory and the import and export enterprise ...