V-shaped are all manufactured with aluminum alloy, the keel, hanging pieces are steel plates with galvanized coating or baked paint finish, the corner is aluminum alloy. There are a variety of color options for the surface, matte, brushed, mirror paint etc.. With fireproof function, it can be used high temperature environment, and adding insulation cotton on the upper part of the ceiling can obtain good noise-absorbing effect, and can meet any ventilation requirements.