Shutter doors to play the same role with the level of the wall separating it from the curtain plate, base plate, rails, bearings, reel, box, control box, roll doors, limiter, lintel, manual quick release switch device, push button switch and 13 parts of fuses and other components, usually installed in the wall separating the inconvenience of using the site. Shutter doors for commercial facade, garage, shopping malls, hospitals, industrial enterprises and other public places or homes. Especially in larger openings, inconvenience installation place play ground door convenience, quick turn effect. http://product.jdol.com.cn/sell/image8063100.html