According to the analysis of zhanzhan production network, the main reasons are as follows: first, the filter belongs to wearing parts, which need to be replaced regularly, so the sales volume in the after-sales market is very large. Second, China's automobile filter industry manufacturers are numerous, and generally small scale, brand concentration is very low, filter after market competition is particularly fierce.
　　There are many reasons for the shortage of filters. From a macro perspective, the sustained growth of fixed asset investment has driven the rapid development of the construction machinery industry, and the expansion of domestic demand has provided the most direct impetus for the development of the market of large-scale engineering filters. Although the state has repeatedly increased macro-control efforts, but in front of the huge market demand base, demand will undoubtedly be an amazing number. In addition, with the continuous development of the international market, the export volume of products has increased exponentially in the past two years, and the export amount of China's engineering elevators has accounted for 25% of the total sales volume.
　　The production capacity of filters has not kept pace with the growth in demand. The President of a well-known foreign filter manufacturer said of the situation of most filter manufacturers: "customers are waiting in line for delivery, while we are struggling with limited parts. "We are working hard to address bottlenecks on a factory by factory basis in order to make the most of our existing sites to produce more. This phenomenon, which is caused by the long supply cycle, will continue to plague the market of large-scale engineering filters worldwide, especially in the Chinese market where the demand is so strong.
　　Filter through the air into the engine, oil and fuel filtering, thus playing a role in protecting the engine, but also improve the engine efficiency, is an essential part of the engine in the car. In view of the direct matching relationship between vehicle filters and complete vehicles (or engines), with the rapid development of China's automobile industry and the rapid increase of car ownership, a broad market space has been provided for vehicle filters in China.
　　This paper is sorted out by dongguan oneness filtration technology co., LTD