... drywall partition system and suspended ceiling system, including drywall stud & track, ceiling main & cross tee, wall angle, main-channel, ... , 70*32, 70*34.5, 75*35, 100*35 Track 41*25, 50*25, 63*25, 72*25, 75 ... 21 Furring channel 28*38, 16*38 Furring channel track 28*20*30,16*20*30 Stud 51*33. ... high qualityCertificatesISO certification and export license Cellphone :0086-18301412451 metal stud &track