... by equipment of Wegoma from Germany UPVC top-hung window 1.Tilt opening is a new and smart way,making the airflow ... when tilt inside,you can clean the exterior of the window easily and safely.3.Practicality:avoid wasting indoor space, ... windows & doors, like sliding window/door, casement window/door, fixed window/door, awning window, tilt&turn window, swing door, rocking window, etc... PVC suspend/ Top ...