Now people have advocated the idea of ??energy conservation. Therefore, in order to extend the life of security doors, we must in our daily lives to it for maintenance. Characteristics of the product is not the same, maintenance methods are not the same. Here a detailed INDUSTRIES security doors that how it is maintained. 1, when faced with a key to open the door can not be fully inserted into the keyhole, if in the winter stitching door manufacturers, should first check whether the key hole icing; if the other seasons, check whether the key hole of a foreign body. 2, I heard the door switch with metal friction sound, you can try a little oil drops on the security door hinge, door manufacturers ranking stitching invalid if you can find a professional repairman. 3, when the security door closed resistance is too large, it can be coated with a little oil in the activities of the tongue. 4, the installation of security doors, filling cement should seriously make effective the close integration between the door frame and the wall mosaic door manufacturers, wholesale, so you can make to maintain a reasonable fit between the door and the door frame, long-term use without fear of distortion . 5, if the insertion operation difficult if the door lock cylinder door manufacturers custom stitching, you can smear a little graphite. Or insert the lock cylinder with a pencil. A Run Co. Zhejiang constantly improve the internal management, lower production costs, strengthen competitiveness, and promote all-round development of the business. After several years of sincere and pragmatic course of struggle, constantly expanding production scale. Zhejiang Industry and Trade Co., Ltd. has a Run a capable management team, personnel structure gradually educated, professional, making the scale of capital, technology content and credibility to the extraordinary rate of increase. At the same time achieve better economic efficiency, but also won over the users and the community the same recognition and praise. We will continue to forge ahead, towards the group, large-scale, technology-driven, market-oriented path courageously advance. Stitching door manufacturers offer _ a reputation first INDUSTRIES (certified) _ Fujian stitching door manufacturers offer a Run from Zhejiang Industry & Trade Co., Ltd .. Zhejiang A Run Co. (www.zjyrgm.com) is an industry leader in Jinhua, Zhejiang, security doors, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Run Industry and Trade in a leadership with the staff warmly welcome all inquiries negotiations to create a better future for Run Industry and Trade.