... chosen,as:pvc ,aluminium,steel,stainless steel,wood,etc.Glass1. Single, double, tripled glass;laminated double glass with grille ,triple glass2 ... : 6mm,9mm,12mm,16mm, etcOpening styleSliding, casement /swing, turn-tilt, tilt-sliding, single-hung, double-hung, etcSpecification(size, color,etc.)Different countries ...