| 1. | A special protection method for underground drainage pipeline
地下排水管道的特殊保护方法 |
| 2. | Underground drainage system of the building in common parts
楼宇公用地方范围内的地下排水系统 |
| 3. | Underground drainage wire
地下防雷线 |
| 4. | Pp . plastics piping systems for non - pressure underground drainage and sewerage - polypropylene - guidance for installation
非压力地下排水和排污塑料管道系统.聚丙烯 |
| 5. | Regarding the safety of underground drainage facilities in hong kong , will the government inform this council
关于本港地下排水管道设施的安全事宜，政府可否告知本会： |
| 6. | Pe . plastics piping systems for non - pressure underground drainage and sewerage - polyethylene - specifications for pipes , fittings and the system
无压力地下排水和排污塑料管道系统.聚乙烯 |
| 7. | Pp . , plastics piping systems for non - pressure underground drainage and sewerage - polypropylene - specifications for pipes , fittings and the system
无压地下排水管和下水道用塑料管道系统.聚丙烯 |
| 8. | Plastics piping systems for non - pressure underground drainage and sewerage - polypropylene - guidance for the assessment of conformity
非承压地下排放和污水用塑料管道系统.聚丙烯? pp .符合性评定指南 |
| 9. | Pp . 1 : plastics piping systems for non - pressure underground drainage and sewerage . polypropylene . part 1 : specifications for pipes , fittings and the system
无压地下排水和污水塑料管道系统.聚丙烯 |
| 10. | Pvc - u . plastics piping systems for non - pressure underground drainage and sewerage - unplasticized poly vinylchloride - guidance for installation
非承压地下排放和污水用塑料管道系统.未增塑的聚氯乙烯 |
