Since the National Plan to Eliminate Substances that Deplete the Ozone Layer in 2002, the former State Environmental Protection Administration and the Automobile Department of the State Bureau of Machinery Industry jointly issued a document stipulating that all off-line vehicles with air conditioning in China must use R 134a as the only substitute product.
China Automobile Environmental Protection Refrigerant (R 134a) is composed of Jinleng and Juhua of Sinochem Group (Xi 'an) and Juhua Co., Ltd. (Zhejiang). The better automobile refrigerant brands on the market all purchase raw materials from these two manufacturers.
Several other big brands sold in the market, such as BaoCiLi, Rainbow purchased from Juhua (Juhua), Tian Hui and Car Servant purchased from Zhonghua (Jinleng), sometimes change their purchases. Of course, there are some brands, but the sales volume is not large.
There is also a brand called "Shuangqi" on the market, which is relatively cheap. On the surface, it is R- 134a canned, but in fact, it is F 12 product inside. There are many other brands that are imitations of the brand and are called "ice enterprises" and "snow enterprises".
At present, there are nearly 100 kinds of so-called R 134a refrigerant brands on the market, of which nearly 90% are fake and shoddy. Some factories use Freon F 12 or other substances that destroy the ozone layer as R 134a environmental protection refrigerants, and some even pretend to be flammable substances such as liquefied petroleum gas.
Because the air conditioning system of F 12 is not compatible with R- 134a, it can be cooled after using F 12, but it will corrode the air conditioning system, cause slow leakage, reduce the service life of air conditioning and endanger the health of people in the car.
However, the huge price difference between the two and the harm can not be immediately reflected. Most shops that install automobile air conditioners and refrigerants use fake "R 134a refrigerant" F 12 to make huge profits (generally, the refrigerant is 25-30 yuan/bottle, earning 18-25 yuan/bottle). They said: How can you make money if you don't change (air conditioning) and add (refrigerant) frequently? The regulatory authorities have done little.
Therefore, don't trust pheasant shops, and don't be superstitious about 4S shops. It is best to buy genuine brands and find someone to add them at manual cost to ensure safety and long-term use.
In terms of purchase price, the genuine R- 134a(250g/ bottle) is about 20-30 yuan, and the highest price is blackmail, because both imported and domestic brands use the same raw materials. False, such as "double enterprises",1below 5 yuan, the lowest 7, 8 yuan. Some of them are labeled 300g, but they are actually less than 200g, which is ridiculous.