... ceiling Good Quality, ISO9001, or third party quality Certiticate 38# Main Keel for suspending ceilingGood Quality, ISO9001, or third party quality ... CertiticateCredit First, Mutual Benefit!38 main keel: The keels are used for suspension ceiling, Light weight, Easy to ... (Square meters): 1.0m/M2, 3m/PC,used for suspended ceiling . 38" Ceiling KeelMain T38×12×0.6×3000mmMain T38×12 ...