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qingdao,China
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Grade III Foundry Sand High Refractoriness With Low Thermal Expansion Coefficien
Industrial Grade I Foundry Sand High Fire Resistance For Die Wax Casting
Cost Efficient Refractory Foundry Sand , Stable Thermochemical Molding Sand
Low FE2O3 Mullite Foundry Sand For Machinery / Aviation Industry
Stable Calcined Flint Clay For High Grade Refractory Materials Production
Delicate Soft White Calcined Kaolin Fire Resistant With Excellent Plasticity
Superior Calcined Bauxite With Homogeneous Structure Customization Available
High Bulk Density Foundry Sand , Precision Investment Casting Sand
Cost Effective Mullite Foundry Sand , Refractory Substituted Zircon Sand
200 Mesh Refractory Foundry Sand With Low Thermal Expansion Coefficient
Precision Refractory Sand 30 - 60 Mesh For Metallurgy / Petroleum Industry
Industrial Refractory Sand , 16 - 30 Mesh Precision Investment Casting Sand
