Highlights Jiancaoping District Taiyuan Stone-Xin Stainless Steel Co., outlined the optional retractable door: retractable door must purchase three steps: The first step retractable door factory installed, knock. Hand knock listen to the sound, solid core is muffled, hollow core sound is very loud, and there is a sense of resonance. Step retractable door factory specifications, see. By cat or locked keyhole view into the interior. The third step is feeling. Feeling the weight of the door by door open, and then determine the thickness of the door leaf weight of the door is reasonable. The basic components are the Taiyuan electric retractable door rails, pulleys and drive belts. Since these three parts and operation of electric retractable door directly related to electric retractable door wearing parts under normal use conditions, structural design, material, machining accuracy, installation and adjustment precision determine its maintenance requirements and life. Life electric retractable door electric components mainly related to improper use and contingencies. Shanxi factory retractable door stainless steel _ _ Xin Guang factory retractable door price offered by Taiyuan Jiancaoping Stone-Xin Stainless Steel Co., Ltd. Shanxi factory retractable door stainless steel _ _ Xin Guang factory retractable door price is Jiancaoping Taiyuan Stone-Xin Stainless Steel Co., Ltd. (www.sxtygxbxg.com) (www.sxtygxbxg.com) this year introduced a new upgrade, the above picture is for reference, please call Tel picture on this page or to obtain the latest information, contact: Li.