屋頂落水頭ROOF DRAIN14.型號:RDU 2″~4″ 功能:四層組合式、防砂礫堰、隔熱層用 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 DRAIN13.型號:RDS 3″~4″ Read more 屋頂落水頭屋頂落水頭ROOF DRAIN17.型號:RDY 2″~8″ Read more 屋頂落水頭屋頂落水頭ROOF DRAIN5.型號:RDE 4″~8″ Read more