Our Products are made under the strict control according to the European standard and using the newest technology of PVC turn/tilt windows with following character: 1. 1.5 mm steel-profile inner armor 2. 26 mm thickness of isolate-glass 3. Max. 130 kg casement bearing ability of hardware 4. 5-chamber and 3-sealing PVC-profile All components of windows are made by ZECH specified manufactories, so that the quality of our products will be ensured.