Sealing is an important policy of the car quality, and car sealing products is to select this policy is good or bad one of the important parts, it is widely used in the car before and after the windshield, doors, windows, advice cabin, trunk and other body parts, add body parts between the open space, with shock absorption, waterproof, dustproof, sound insulation, decoration and other functions, the driver and passenger and the whole car to play a protective role. There are many ways to classify the car sealing products, generally according to the title of the equipment parts (parts), data varieties, the number of composite data, operating characteristics, etc. to never continuous classification. Which according to the title of the equipment components (parts) classification is a common approach, which includes hatch, front and rear windshield seal, door frame seal, door seal, door glass guide seal, door dust, door and window surface seal, side window seal, sunroof seal, roof seal, trunk (backbone) seal, etc.