Aluminum window and door is the important part of it, its performance and quality make a diierent influence to the window and door’s function. Because modern technology’s developing, window and door hardware accessories(such as handle, hinge, friction stay, connection) go into the market.
  Modern buliding window and door classify by the material: Aluminum window and door, UPVC window and door and composite material window and door. Most of our country’s window and door is Aluminum window and door and it is the important part of modern construction. In fact, not only in wind resistance or gas tightness, but also environmental protection, Aluminum can call excellent.

 Using the new technology, new material and new carft to improve corrosion resistance is the must road. The foreign factories use PVD to production the excellent function window and door hardware accessories. PVD has a catchness strengh and gas tightness properties. And it is vrey excellent to be the window and door hardware accessory.