Gongyi Weida Co., Ltd is a professional manufacturer of sintered refining slag, Calcium aluminate, synthetic slag, calcium silicate, calcium ferrite, etc. Founded in 1985, Weida always hold the principle of "Responsibility Makes Perfection" to its development. From raw materials to finished product, we control every step and adopt precise manufacturing process. So Weida has confidence to provide customers specific products with high quality. Weida has employed many professional elites in refractory industry.