OBT Refractory Manufacture CO., LTD has been manufacturing casting machine and refractory materials for more than 16 years. Our stable quality and good after-sales service help us to obtain high feedback from European, South America, Japan, Thailand, Taiwan, Vietnam, Cambodia, Philippine, Malaysia, etc.
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OBT Mining as the China No.1 biggest manufacturer for mullite sand which has been supplying to Germany Thyssenkrupp,totally capacity 200000tons and OBT casting subsidiary factory specializing in R&D and manufacturing of precision casting equipment, precision metal products processing and precision casting process. Comprehensive company for technical research and supply for the invesment casting sand and machines. ...