In the past, we used R-410A (which is used by many home air conditioners). Although it does not destroy the ozone layer, it has a fatal drawback: the greenhouse effect is too strong! If it leaks into the air, the "contribution" to global warming is more than 2,000 times that of carbon dioxi

With the global promotion of environmental protection and HFC reduction, the new generation of environmentally friendly refrigerant R454b has officially become the "new favorite" of air conditioning and heat pump systems in North America and Europe. 3 core cold knowledge, take you to unders