Henan Oyida Refractory Co., Ltd locates in Zhengzhou City of Henan Province. Specialized in the fields of refractory material. Nearly 90% of our products are exported to European, Asian, North and South American, African and almost worldwide. Professional team, quality products and high prestige win us both vast existing and potential international market. LineI :Refractory Material High quality high insulation firebrick Hi-alumina firebrick Sintered zirconia brick Zirconia mullite brick Low creep fireclay brick Silicon firebrick Alumina insulation firebrick Light weight insulation firebrick AZS materials Other unshaped refractory materials. Our company products are widely used for the casting of steel, construction material, chemical industry, glasses, and machines. The perfect quality of all our products is Oyida’s ultimate target. In order to keep this promise we perform extensive quality control during the course of the entire production process.