1, 09J62 1-2 electric lighting and smoke exhaust skylights * * include five kinds of roof smoke exhaust skylights: triangle (single-piece, conjoined), straight (single-piece, conjoined), circular arch (side-opening, sliding, upward-opening) and shielding (downward-opening).

2. 1 1J33 "Ventilation and Lighting Skylights" covers three types of products: arc lighting and ventilation skylights (MCW4-MCW7), thin lighting and smoke exhaust skylights (MCW 1 -MCW2) and electric lighting and smoke exhaust skylights (triangle, arc and linear).

3. 18J62 1-3 Vent skylights include many types of products, including TC 1 -TC7 arc vent skylights, TC8 lighting and smoke exhaust skylights and TC9 -TC 10 thin vent skylights.

4.21J621-1There are many types of skylights, among which the skylights used for factory roofs are triangular (open up and down), flat (double-open and single-open) and circular arched (side-open hanging windows, full-open windows, partial-open and double-open).