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SW-743A Electronic air conditioning refrigerant refrigerant Freon maintenance leak detector halogen gas detector
SW-743A Electronic air conditioning refrigerant refrigerant Freon maintenance leak detector halogen gas detector
WJL-6000 Freon Leak Detector Halogen Leak Detector Refrigerant Gas HVAC R22 R410A R134A R1234YF CFCs HCFC Detector