The types of high speed doors of SHENZHEN HONGFA AUTOMATIC DOOR CO., LTD. are as follows: 1. High speed roller door. The high speed roller door is the most used and relatively economical high speed door in the market. The main materials of the high speed roller door are PVC and stainless steel. PVC is used for the door curtain, and stainless steel is used for the door frame. The thickness and color of the door curtain can be selected, and the material of the door frame can also be selected Stainless steel or aluminum alloy. 2. Auto recovery high speed door. Also named zipper high speed door. The auto recovery high speed door is also a kind of PVC high speed door. The difference between it and the high speed roller door is the door curtain and the connection between the door curtain and the door frame. The curtain of the high speed roller door uses a windproof rod, and the auto recovery high speed door does not have a windproof rod, and the connection with the door frame is sealed with a zipper, so the sealing of the auto recovery high speed door is better, and after the door curtain is accidentally knocked off by human operation Self-healing is possible. 3. Cold storage high speed door. The