A.設(shè)備保溫棉B.風(fēng)口C.吊頂絲桿D.主副龍骨
A.U型邊龍骨B.木龍骨C.W型鋁角條D.Z型鋁角條E.L型鋁角條
A.100mm-150mmB.150mm-170mmC.150mm-200mmD.200mm-300mm