... products and excellent service. 2.Features: 1.Ceiling T_keel ,high quality hot dipped galvanized steel coil used,zinc volume:above 80g , ... bent after installation ,no accumulated tolerance and with great load-bearing.It is also damp protection ,fire resistance ,no oxidizing ,no ... of office building, school, hospital, shopping mall etc. Shijiazhuang Tengchuang high quality and stable steel keel