Detailed Product Description: 1)Material: galvanized steel or aluminum 2)Specification: 300x300mm, 600x600mm, 800x800mm, 300x1200mm, 400x1200mm, 600x1200mm. 3)Thickness: from 0.4 to 0.8 (guarantee enough) 4)Surface coating: Outdoor polyester powder coating (10 years guarantee) 5)Style: plane, perforated, lay-in, clip-in or special order. 6)Packing: standard carton with XINJING mark (wood box or hard paper is addible)7)Quality guarantee: We guarantee the surface color stable for 10 years by indoor use.Product Merit: 1)Surface smoothness and easy cleaning2)High precision ,rigidity and consistency3)Strong corrupt proof, weather proof and chemical 4)Surface color guarantees 10 years for indoor use.5)Flexible suspension system make each ceiling tiles easy install and disconnect 6)Easy to match lamps or other ceiling parts 7)FireproofRecommend applying in these places below: 1)Supermarket, marketplace 2)Service station, toll station 3)Underground, air port, bus station4)School, office, meeting room 5)Hall, corridor and toilet 6)Sport centre7)Office, store, plaza8)Hotel, restaurant, kitchen 9)HospitalAcoustic ability: 1)Perforated with SoundTex paper2)Absorb modulus: NRC=0.7 3)Acoustic level: a) Plain : CAC=40dB b) Perforated: CAC=24dBFire proof ability: British Standards Institution fire test pass (BS476)