... PVC mainly products : pvc sliding/casement window , pvc door and window , pvc doors and windows , top-hung/shutter/tilt ... , pvc folding doorAluminium mainly products:aluminium sliding window,aluminium window with grill , aluminium casement/hung window,American style double hung ... Black or Grey or Brown ColourOpening Style Horizontal Sliding, Vertical Sliding, Casement, Top-Hung, Single-Hung, Tilt&Turn ...