Potassium Aluminum Fluoride, Potassium Cryolite, Synthetic Cryolite manufacturer / supplier in China, offering Fixed Carbon Sulfur-Free Calcined Petroleum Coke for Customer Requirements Chemical Industry, Bulk Density 0.8-1.2g/cm3 Roasted Petroleum Coke for Graphite Electrode Production, Low-Pressure Vessels Welding Flux (HJ-431) Welding Power Industrial Grade and so on.