Magnesia refractories (magnesite refractory) to magnesite, seawater magnesite and dolomite, etc., as raw materials, mainly periclase crystalline phase, magnesium oxide content of more than 80% of refractories (Refractory material). Refractories are alkaline (basic refractory). The total sample of Anshan, Yingkou, Dalian, Jinzhou, Panjin and other five regions 89 production of 112 batches of magnesia refractories (magnesite refractory) products, qualified 105 batches of refractory agents, product sample pass rate of 93.8 %. Among them, 75 magnesia refractory materials production enterprises, 85 batches of products were random inspection, product sampling pass rate of 100%; magnesia refractory products for 17 of the 27 batches of products manufacturing enterprises were random inspection, 10 production of 20 batches of product sampling qualified, product sampling pass rate 74.1%. Magnesia refractory products, product sampling situation magnesium (aluminum) exists mainly brick nonconformity is apparent porosity, bulk density, load softening starting temperature, the heating of permanent change, thermal shock resistance; major nonconformity exists magnesia-chrome brick is the porosity; the presence of magnesium and calcium brick main unqualified items are apparent porosity, bulk density, load softening starting temperature. The provincial special supervision for product quality checks reflected in the quality of refractory species, Liaoning Provincial Bureau of Quality Supervision requires the relevant units should strictly follow the "People's Republic of China Product Quality Law," "product quality supervision and inspection management approach" laws and regulations, to take effective measures, good product quality supervision and inspection of substandard products manufacturer post-processing work to ensure product quality and safety. Wholesale _ shangzhuang Refractories Refractories (certified) _ Harbin refractories by shangzhuang Refractories Co., Ltd., Zhengzhou City. Zhengzhou City shangzhuang Refractories Co. (www.yntjj.com.cn) (www.yntjj.com.cn) is Zhengzhou, charge, flux leader, over the years, the company is implementing the scientific management, innovation and development, honesty and trustworthiness guidelines, and satisfy customer needs. In shangzhuang refractory leadership with the staff warmly welcome all inquiries negotiations to create shangzhuang Refractories a better future. You can also access (www.yntjj.com.cn/supply_details_44826720.html), for more information about the company.