... Ceiling parts/galvanized light steel keel 1.Usage:ceiling; 2.Easy to install Ceiling parts/galvanized light steel keel Construction Image: Ceiling parts Ceiling channels Ceiling system light ... gypsum board,and many other wall and ceiling board;3.Moisture -proof,shock-resistance,high ... light steel main channel,75stud,100 stud,150stud,50 track,75 track,100 track and 150track Ceiling parts/galvanized light ...