Open" mainly produce&sell high-end fittings of the industrial door. Longyou Open Electromechanical Technology Co. Ltd is a leader in the field of door accessories manufacturers in China which is founded in 2002. Main products are pulley, slide wheel, sliding door system, industrial sliding door hardware accessories, track, dustpan, nylon wheel, other doors and Windows accessories, etc. We can export to the global. More than decade, OPEN insist on continuous development and innovation. Quality and integrity win first is our management idea. For the moment, our company's products do not only acclaimed in China, but also well received in the international market. We still believe that: there is no more mountain higher than people; no more path longer than the feet. OPEN would like to service for you forever with our all sincerely!