Fiberglass Ceiling - Convex Panel - It's a special fiberglass ceiling with convex facing.

Fiberglass Ceiling - Convex Panel

Convex Panel is a kind of special fiberglass ceiling with convex panel. The special form of the panel is shaped in a mill, and the surface of the panel  is laminated with fireproofing material. Differs from normal fiberglass panel, the surface will show a convex shape.