galvanized steel CD channel used for gypsum drywall suspened ceiling ... (track,stud, furring channel, Omega, wall angle,UD,CD,UW,CW) from China. Two of our plants have ... by ISO9001, we apply the most strict quality control system, three steps inner inspection. We export monthly about ... 92mm, 118mm, 138mm. FURRING SYSTEM 35x22mm, 35x16mm. WALL ANGLE 23mm, 25mm, 28mm, 32mm. CD & UD SYSTEM 60*27, 27* 28mm, ...