Nta
■ Roj free compressor uas tuaj yeem rov qab tau tag nrho cov tub yees hauv khw: CFC, HFC thiab HCFC.
■ Kev tiv thaiv siab thiab tsis tshua muaj siab thiab 80% ntab sensor overfull tiv thaiv (yeem) ib leeg thiab ob lub tog raj kheej piston compressors.
■ Roj cais ntaus ntawv essence rov ua haujlwm.
■ Tsis siv neeg purification valve.
■ Me me lub teeb yuag yooj yim nqa.

