| UNCPC 說明 |
9401 94010 Sewage services
Sewage removal, treatment and disposal services. Equipment used are waste pipes, sewers or drains, cesspools or septic tanks and processes utilized may be dilution, screening and filtering, sedimentation, chemical precipitation, etc.
Exclusions: Collection, purification and distribution services of water are classified in subclass 18000 (Natural water).
Construction, repair and alteration work of sewers are classified in subclass 51330 (Construction work for waterways, harbours, dams and other waterworks). |