... and PVC window frames, door frames,metal mounting grips, We have received the certificate of ISO 9001 ... electro-zinc coated~10um,cold-stressed,pressed,galvanized steel.Application: mounting of wooden and PVC window frames,door frames,metal ... mounting grips. Substrate: concrete,full brick,cellular brick,structural clay and slug-concrete tilesInstallation Tips:minimum screw anchorage , ...