Dongan lub tsev ntawv hlau carved hniav sandwich vaj huam sib luag, yog ib yam ntawm cov khoom tshiab rau sab nrauv lub tsev rwb thaiv tsev thiab kho kom zoo nkauj, uas yog nyiam los ntawm ntau thiab ntau builders. Sab hauv muaj ntau yam ntaub ntawv uas muaj siab ceev, xws li pu, eps, pir thiab lwm yam. Qhov saum npoo yog AL-ZN alloy coated steel ntawv. Thiab rau rwb thaiv tsev, fireproof thiab dampproof, cov khoom siv hauv qab siv cov txheej aluminium foil, uas muaj kev ua tau zoo tshaj plaws ntawm kev rwb thaiv tsev thiab dampproof.
