HOME ABOUT PRODUCTS CONTACT EN CH News Door closer working principle 闭门器工作原理2018-07-03 Zhicheng is an OEM Door Control Hardware manufacturer whose know-how enables well-known brands to beneficiate from high-quality products. Over-head Door Closers as well as Floor Springs (also known as Floor-Concealed Door Closers) require state of the art machinery and production control in order to guarantee long term efficient use. The variety of designs and shapes and the ability to produce custom made items from cast or extruded material allows us to offer products that are suitable for all kind of applications, should it be architectural esthetic or highly functional requirements such as public buildings or hospitals and so on… All our closers comply with the EN 1154 standard and are tested to pass a minimum of 500.000 cycles and can be used for glass, wood, aluminium or hollow metal doors. We also manufacture a complete range of accessories going from patch fittings, handles to hinges and locks. Do not hesitate to contact us for more information. OEM door closer manufacturer, OEM floor spring manufacturer, OEM Hardware manufacturer, is what we do, and because we value you, we do it best! Door Closers Floor Springs Patch Fittings Hinges Home | About | Product | Contact us Copyright © 2015 Zhisheng Door Control Hardware All Rights Reserved粤ICP备13014856号-2Technical: balck-jet.com