Supplementary information on 235ds - yuen long and kam tin sewerage and sewage disposal 补充资料- 235ds -元朗及锦田污水收集系统及污水排放设施
3.
Elastomeric seals - material requirements for pipe joint seals used in water and drainage applications - vulcanized rubber 弹性密封件.水和污水排放设施用管联接密封件的材料要求.硫化橡胶
4.
Yuen long and kam tin sewerage and sewage disposal - kam tin trunk sewerage phase 1 and au tau trunk sewers 元朗及锦田污水收集系统及污水排放设施锦田污水干渠收集系统第1期及凹头污水干渠工程
5.
Supplementary information on 215ds - yuen long and kam tin sewerage and sewage disposal - kam tin trunk sewerage phase 1 and au tau trunk sewers 补充资料215ds元朗及锦田污水收集系统及污水排放设施锦田污水干渠收集系统第1期及凹头污水干渠工程