Shandong Tiege Furnace Industry Co., Ltd. is a high-tech enterprise integrating scientific research, design, production, manufacturing, complete machine assembly and sales, and a member of China Foundry Association. The company focuses on the research and production of pure oxygen natural gas rotary metal melting furnace, and has developed a new energy melting furnace of strategic significance for China's casting industry, especially the cast iron industry, on the basis of the introduction of Italian technology in 2015, filling the domestic gap. At present, the company has 4 invention patents and 21 utility model patents.