屋頂落水頭ROOF DRAIN16.型號:RDW 2″~4″ 功能:三層組合式、防砂礫堰、承插出水口 Category: 屋頂落水頭 Description Description 廠製圖 施工圖例 Related products 屋頂落水頭屋頂落水頭ROOF DRAIN1.型號:RDA 2″~5″ Read more 屋頂落水頭屋頂落水頭ROOF DRAIN7.型號:RDH 2″~4″ Read more 屋頂落水頭屋頂落水頭ROOF DRAIN3.型號:RDC 2″~3″ Read more