1. He was to hold on to the window sash while cleaning.

2. Usd for machining flute of sliding window sash.

3. The slide block on the window sash is pulled by the support, slides along the runner of the window sash, thereby limiting the position of the window sash.

4. Window sash is invisible and only artistic frame set curtain wall is seen outside the room.

5. Outside, the wind whistled thinly along the fluted tiles and stirred the open window sash.

6. Flexible groove design is utilized at the exterior side of the in-opening window for sealing, decoration, hiding window sash, thermal insulation and energy saving.

7. Undraw the window curtain, let fresh air pour in, do not fear to crush the window sash.

8. High – grade leaves are applied to bear a large area of window sash .