Magnesium Hydroxide manufacturers Our History Zhengzhou Top Trading Co., Ltd. was founded in the year 2012, which is a branch company of Xinmi Wanli Industry Development Co., Ltd. (Wanli Industry), a leading supplier of ceramic proppant. Top Supplychain is specialized in supply-chain of various kinds of chemicals. In 1994, Xinmi Wanli Industry Development Co., Ltd. was founded. Originally Wanli Industry manufactured refractory materials. In 2002, Wanli Industry seized the market opportunity in energy industry锛宼imely adjusted the production structure, and turned to the R&D, production, sales & service of ceramic proppant. In 2011, Wanli Industry鈥檚 annual sales volume had reached 210,000 tons in the domestic and international market. Wanli Industry also invests location.Magnesium Hydroxide manufacturers website:http://www.tosupplychain.com/ website2:http://www.topresolve.com/