... We are professional manufacturer in producing PVC windows&doors, and thermal insulating aluminium Windows & doors in china. We can offer ... ,6mm,8mm; Space: 6mm,9mm,12mm,16mm, etcOpening styleSliding, casement /swing, turn-tilt, tilt-sliding, single-hung, double-hung ... Different countries have different demands for it; Special shaped windows also can produce. Reinforcement steeU form galvanized steel; ...