Detailed product description: 1) Material: galvanized steel or aluminum 2) Size: 300 x 300mm, 600 x 600mm, 800 x 800mm, 300 x 1,200mm, 400 x 1,200mm, 600 x 1,200mm, or special size 3) Thickness: 0.4-0.8cm 4) Surface coating: outdoor polyester powder coating5) Style: plane, perforated, lay-in, clip-in or as per your request 6) Quality guarantee: surface color can be stable for 10 years by indoor useProduct merits: 1) Surface smoothness and easy cleaning2) High precision, rigidity and consistency3) Strong corrupt proof, weather proof and chemical proof 4) Surface color stable for 10 years' indoor use5) Flexible suspension system makes it easily installed and disconnected 6) Easy to match ceiling7) FireproofRecommend place for application: templeAcoustic ability: 1) Perforated with SoundTex paper 2) Absorb modulus: NRC=0.7 3) Acoustic level: a) Plain: CAC=40dB b) Perforated: CAC=24dBFire proof ability: pass British Standards Institution fire test (BS476)We also offer interior design and machining service.Packing:Standard carton with Xinjing mark (wood box or hard paper is addible)