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At present, developed countries are gradually phasing out the second generation (HCFCs, represented by R22) and the third generation (HFCs, represented by R32) fluorine-containing refrigerants, and overseas suppliers have gradually withdrawn from the market. However, the old refrigeration equipment has not been eliminated, and the matching fluorine-containing rubber and plastic materials and air-conditioning maintenance market are facing a shortage of raw materials. However, China's current refrigerants are still dominated by the second and third generations, so China's refrigerant export market is welcoming.

According to the Montreal Protocol, the second generation of refrigerants will be completely phased out, and different elimination schedules have been established according to developed and developing countries: developed countries began to freeze the consumption base in 1996, giving a 24-year buffer period, The second generation will be completely phased out by 2020; the phase-out process in developing countries is slightly slower than in developed countries. Production and consumption must be frozen in 2013, starting from 2015, giving a 17-year buffer period and completely phased out in 2030. Since 2013, China has implemented a quota system for the consumption and production of second-generation HCFCs refrigerants, from 308,000 tons in 2013 to 274,000 tons in 2015, and will remain around 200,000 tons in 2020, 2030. The year is completely eliminated.

Although the third-generation refrigerant has an ODP value of 0, it has a high GWP value, which will still greatly accelerate global warming and belong to products that will be eliminated. On October 10, 2016, the 28th Meeting of the Parties to the Montreal Protocol adopted an amendment to reduce HFCs. The agreement also sets out different phase-out roadmaps based on the economic development of developed and developing countries. China has pledged to gradually reduce HFCs from 2024.

At present, the second-generation refrigerant capacity of developed countries in Europe has completely withdrawn, and the region in the Americas is also rapidly shrinking. The EU's environmental protection policy is also causing the production capacity of the third-generation refrigerant to gradually decrease or even be partially eliminated. In comparison, there are still some second- and third-generation refrigerant production opportunities. It takes 8-10 years for the old refrigeration equipment to start to use, which leads to the second and third generation. Refrigerants still have great demand overseas, and China's product exports are expected to continue to rise.

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