Aluminum grilleThe main and auxiliary keels are distributed vertically and horizontally, with distinct levels, strong three-dimensional sense, novel shape, fire resistance, temperature resistance, and good ventilation. The cold air port, exhaust port, grade drop, lamps, etc. can be installed in the ceiling. They are widely used in large shopping malls, bars, Waiting rooms, airports, subways and other stations are generous and beautiful, and long-lasting as new.