###### Abstract
Some organizations predict that with the financialization of the carbon trading market, carbon financial products such as carbon futures, carbon options, carbon funds, and carbon bonds will also appear on the basis of carbon asset spot such as carbon allowances and project emission reductions [6]. As an indispensable chemical product in the construction and transportation fields, refrigerants will cause a large amount of carbon emissions during the life cycle of their production and use, and there is enough room for carbon reduction. In addition to optimizing different air-conditioning systems to reduce refrigerant leakage and loss, reducing the carbon emissions caused by the production of new refrigerants by recycling old refrigerants is also an important way to reduce carbon in the refrigerant industry. At the same time, through carbon quota management, companies can also get considerable returns from the carbon trading market and promote the development of low-carbon industries [7]. The requirements for low-carbon development are not only closely related to the energy industry, but also inextricably linked to various industries in China's industrial development. The direction of low-carbon development will have an incalculable impact on China's economic development in the next few decades. Among them, the construction sector is one of the three major areas of energy consumption (industry, transportation, and construction). The hydrofluorocarbon and hydrochlorofluorocarbon refrigerants commonly used in building air conditioning are important components of non-carbon dioxide greenhouse gases. The greenhouse gas caused by the leakage of building-related refrigerants in China is equivalent to 100 million tons of carbon dioxide equivalent [8]. Since the refrigerant used in vehicle air conditioners is in a moving and vibrating state for a long time, the leakage of refrigerant is more serious than that in building air conditioners. China is currently the world's largest producer and consumer of refrigeration equipment and refrigerants [10]. Refrigeration and air conditioning are widely used in various industries in China's national economy, national defense industry, and the improvement of people's living standards. During the \"13 th Five-Year Plan\" period, the average annual growth rate of the main business income of the refrigeration and air-conditioning industry is expected to reach 5% to 8% [10]. More than one-third of the global demand for refrigerants comes from China. It is estimated that by 2030, the total refrigerant consumption of China's refrigeration and air-conditioning industry will reach 154,000 to 178,000 tons [11]. In the context of the vigorous development of refrigeration equipment and refrigerant production, the elimination and restriction of some refrigerants that have adverse effects on environmental pollution and climate warming are also underway [12]. Refrigerants can only produce the greenhouse effect when they are discharged into the atmosphere. In order to meet people's needs for a comfortable environment and the use of refrigerants, while reducing direct refrigerant emissions, the original waste refrigerant in the refrigeration system is recycled and regenerated. Refrigerant capacity quota is an effective means to reduce pressure and reduce refrigerant emissions [13]. There are three main current carbon emission evaluation methods. Global warming potentials (GWP), to evaluate the greenhouse effect of refrigerants; Total equivalent warming impact (TEWI), to evaluate the climatic performance of refrigerants operating in a refrigeration system for a certain number of years; Life cycle climate performance (LCCP) is a comprehensive evaluation of the greenhouse effect during the operating life cycle of refrigerants and refrigeration systems. On the basis of TEWI, the LCCP evaluation index adds the influence of refrigerant and refrigeration system production and recovery process and refrigerant decomposition products on the greenhouse effect.