This is a topic that can't be mentioned. Both cars need breathing air filter (air filter) or breathing of the personnel on the car needs to "air conditioning filters (air filter), and its easy to counterfeit. Because this kind of filter to replace frequently, it is not easy to identify, insufficient recognition of the owner, and so on, filled with more than eighty percent of the fake auto parts market. In the auto parts city, these goods are referred to as "deputy factory goods", "factory", "brand", "cheap", in a word said everyone was afraid "false". And that is the case. Especially compared air filter, air filter, this phenomenon is even more so. False filter made from cheap low-quality non-woven fabrics, or made from activated carbon of inferior quality and even counterfeit, costs less than 10 yuan. I have been interested in collected more than 5 fake mironAir brand baolai with air conditioner filter. Some of their poor workmanship, carbon layer as "coal layer", could be left in the dark, dark mark on his fingers, Some are very close to the real thing done, look hard to find faults, but with the hand grabs weight (very light very light), immediately leaked to enlighten carefully on the table a earthquakes, even have carbon slag shake down. Strong purchasing power of Chinese consumers do actually very poor, because first of all, we have most of the world's fake goods and fake goods manufacturers, secondly fakes do great variety realistic-looking, the degree of "imitation", we can't recognize. I almost can't find a thorough approach to help others to stay away from fake auto parts, because we get along with everyone in the same market environment, the consumers and the only thing we can do, is to find a regular channels and can be trusted supplier. Give you recommend below two big brands authentic air filter: Bosch As the world's largest fuel injection system suppliers, Bosch attaches great importance to better protect the fuel injection system of precision parts. At present, Bosch in the automotive aftermarket providing a full range of filter products, including air filter, oil filter, fuel filter and air filter. Bosch filter filter gap uniform density distribution, to ensure the best filtration efficiency and minimum flow resistance. Filter size precision, sealing and joint processing, assembly tight and reliable. Mann brand Germany's filter, known as the best filter. Many Volkswagen factory loading, use the filter is by mann brand OEM processing, especially the oil filter, common "MHO" logo, must be, Ed hummel products