The project was designed so that the development of the new air-conditioning units and the new compressors could be done in parallel and in close cooperation between Midea and Meizhi, to ensure that an optimized system, based on R-290, is produced. In the case of Meizhi, the selected production line has an annual production capacity of 1,830,000 rotary compressors that are applied in split air-conditioners of 1 hp and 1.5 hp. Regarding Midea, the converted production line is an advanced mechanized line with complete manufacturing functions, in which 200,000 split units are produced annually.