R-134a (1,1,1,2-tetrafluoroethane) is a refrigerant that contains no chlorine atoms, does not damage the ozone layer, and has good
safety performance (non-flammable, non-explosive, non-toxic, non-irritating and non-corrosive). Its refrigeration capacity and
efficiency are very close to R-12 (dichlorodifluoromethane, freon), so it is regarded as an excellent long-term alternative R-134a
is internationally recognized as the best environmental protection substitute for R-12. It does not destroy the ozone layer at
all. It is an environmentally-friendly refrigerant approved and recommended by most countries in the world, and it is also the
mainstream environmentally-friendly refrigerant at present. It is widely used for re-adding in the initial installation and
maintenance process of new refrigeration and air-conditioning equipment. R134a is very low in toxicity and nonflammable in air,
and its safety category is A1, which is a very safe refrigerant.