... and drywall metal stud 1,ISO9001-2008 certification 2,thickness:0.25-1.5mm, 3, size:different size ceiling channel and drywall metal ... : Production nameItemSize(mm)Vertical channel(Stud)CU(CW)50x5075x50100x50Horizontal channel(Track)QU(UW)50x4075x40100x40 Remark:1), ... zinc galvanized steel strip, absolute fireproof and heat insulation, waterproof and antirust, anticorrosive , high durability2. Hot ...