Tran 5.18. There are many types of ceilings are used in public works. Depending on the requirements of each of the works that the selection accordingly. For suspended ceiling plastered lime must arrange ventilation holes and holes for people up to check repairs. 5.19. for the ceiling of the great Hall and suspended ceiling there are relatively many pipeline systems, roof armor floor layout is to test the fix, and floor layout going back if requested.
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