... , 300g, 340g, 500g, 800g, 1000g; Disposable cyli working substance: R134A,OUR R134A SERIES HERMETIC REFRIGERATION COMPRESSOR IS USUALLY USED FOR WATER DISPENSER ... AND FREEZER ETC. REFRIGERANT GAS R134A Can of 220g, 250g, 280g, 300g, 340g, 500g, 800g, 1000g ...