Is sale of hfc-134a restricted

Yes, the sale of HFC-134a (tetrafluoroethane) is restricted in many regions due to its classification as a hydrofluorocarbon (HFC) with high global warming potential. The European Union and the United States, among others, have implemented regulations to phase down the use of HFCs under initiatives like the Kigali Amendment to the Montreal Protocol. These regulations aim to reduce greenhouse gas emissions and encourage the use of more environmentally friendly alternatives.