wholesale R12 refrigerant gas 1-OEM is accepted 2-Reasonable and ... , 250g, 280g, 300g, 340g, 500g, 800g, 1000g; Disposable cylinder 30lb/13.6kg, 50lb/22.7kg; Recyclable cylinder 400L, 800L, 926L, 1000L ... ) MOQ:Mix order are welcome, 20pcs min order,1150 cylinder wholesale high purity r12 refrigerant gas