1, jinleng is the product of central enterprises, the best refrigerant in China, with the best quality, the most supporting facilities and high price. "Golden Cold" belongs to the brand held by Sinochem Blue Sky, a member of the world's top 500 Sinochem. As a new industrial brand, Beijing Maintenance is constantly innovating and entering the public's field of vision, which is not as well-known as Golden Cold.

2. Jinleng brand started from 1999 and has 23 years of R&D and production experience in refrigeration industry. Sinochem Blue Sky is the only supporting unit of the National ODS Substitute Engineering Technology Research Center in China. Beijing Maintenance was founded by Beijing Beijing Maintenance Brand Operation Management Co., Ltd. Beijing Maintenance Brand has two R&D and testing centers and three production bases all over the country. The production plant cooperates closely with the State Key Laboratory of Internal Combustion Engine, focusing on the R&D and production of lubricating oil agents and automobile maintenance products that meet the needs of users.