Equiped in: shopping malls, big buildings, hotels, kitchens and offices, etc. Materials: high quality aluminum alloy. Perforations: all aluminum ceilings can also be perforated according to customers' requirement. The size of each hole can be chosed within dia1. 8mm, dia2. 3mm and dia3. 0mm. Coating: akzo powder, epoxy coating, polyster coating, etc. Specifications: 300 x 300mm, 400 x 400mm, 500 x 500mm, and 600 x 600mm. 800x800mm, 100x600mm, 300x600mm, 300x1200mm, 600x1200mm., another sizes are available according to customers' requirement. Quality control: iso9001 and iso14001. Packing: 1pcs/polybag, 20pcs/ctn