... on high quality.3. Delivery time: 30~35 days4. OEM, ODM services are offered5. Small trial order quantity is welcome6 ... high strength steel plates, wide spray, corrosion, oxidationCeiling with ceiling intact rectangular chassis, body frame with a mask oblique screws ... T5 series, or optional emergency unitInstallation, A, B-type ceiling surface mounted, C-type concealed gypsum boardFixed mode: hanging ...