Supply of Refrigerant Gases Of Hvac System At Bpcl Br 2478 Chlorodifluoromethane Gas R 22 Refrigerant Gas Tetrafluoroethane R 134A Pentafluoroethane R407c Pentafluoroethane Gas R 410A Difluoromethane R 32 Refrigerant Gas Cylinder Empty Cs 45Kg F R32