Thermoplastic elastomer (TPE) seal in the wooden doors, security doors, sliding doors, all kinds of aluminum doors and windows and other windows and doors play a very key role. The most obvious is the shock, installed in the door line after it to reduce (or even disappear) closed doors (windows) when the collision sound, the edge of the door from a protective effect, and extend the life of the door, reducing noise. Second is the seal, shock absorption, isolation indoor and outdoor air, effectively played a role in insulation, energy saving, and will prevent mosquitoes and other small insects drill into the room.