China is a big vehicle manufacturing country, with the largest sales volume of new cars and car ownership in the world. There are welding, stamping, painting, power assembly and other production lines of automobile flow process, involving industrial materials, control system, special manufacturing equipment and other fields. To build a safe and controllable automobile industry chain is inseparable from the application of filtration process. Hangzhou Dali's filtration solution is to promote the sustainable and healthy development of automobile industry.