Main categories: Sodium Phosphate (MSP, DSP, TSP, TSPP, SAPP, STPP, SHMP), Potassium Phosphate (MKP, AKP, DKP, TKP, TKPP), Calcium Phosphate (DCP, MCP, TCP, MDCP), Ammonium Phosphate (MAP, DCP, UP), Triple Super Phosphate