DRAINAGE SERVICES DEPARTMENT SHAM SHUI PO NO.1 & NO.2 SEWAGE SCREENING PLANT DRAINAGE SERVICES DEPARTMENT SHAM SHUI PO NO.1 & NO.2 SEWAGE SCREENING PLANT 渠務署深水埗一期和二期污水隔篩廠 渠務署深水埗一期和二期污水隔篩廠 83078