OBT is committed to providing investment casting materials and equipments for 16 years. We can also provide more service according to customer's design requirement...
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.
Also known as: OBT Mining