Qingdao Duoyuan New Materials Co., Ltd specializes in inorganic non-metallic new materials production, management and professional service for years.Qingdao Duoyuan New Materials Co., Ltd has many professional sales and technical brilliants from foundry and metallurgical industry. Meanwhile, we cooperate with famous domestic universities and research institutions committing to the development and research of new casting auxiliary materials product, in order to constantly improve the technology of foundry industry. Duoyuan is a specialized casting and smelting material company integrating science, industry and trade.Our main products are: foundry ceramic sand series, petroleum proppant, petroleum coke, graphite products and other series products.