| 1. | Ring mains for cha kwo ling salt water supply system 茶果岭海水供应系统环形总水管敷设工程 |
| 2. | Installation of ductile - iron water mains and their appurtenances 球墨铸铁总水管及附件的安装 |
| 3. | Half the village were flooded out by a burst water main 由于总水管破裂,半数村民被迫离开了家。 |
| 4. | Half the village were flooded out by a burst water main 由於总水管破裂,半数村民被迫离开了家。 |
| 5. | Water main diversion works 总水管改道工程 |
| 6. | Disinfecting water mains 消毒总水管 |
| 7. | Water main laying 总水管敷设工程 |
| 8. | Electric appliances connected to the water mains - avoidance of backsiphonage and failure of hose - sets 与总水管连接的电气器具.避免软管组件的反虹吸和失效 |
| 9. | Electric appliances connected to the water mains - avoidance of backsiphonage and failure of hose - sets 与总水管连接的电气器具.避免软管组件的反虹吸和失效 |
| 10. | Amendment 1 - electric appliances connected to the water mains - avoidance of backsiphonage and failure of hose - sets 修改件1 .与总水管连接的电气器具.避免软管组件的反虹吸和失效 |