Shijiazhuang Longhao Chemicals Co.,Ltd founded in 1986, is one of the largest rubber materials (such as zinc oxide (by indirect process, direct process and active zinc oxide),magnesium oxide, zinc carbonate ,magnesium oxide, antioxidant),manufacturer in Shijiazhuang. The materials have been one of the most popular brand in the world, having been widely used in rubber, ceramic ,plastic coating ,system lacquer, papermaking  covering America, Europe, Middle East and south-Asia.