Kofrey Engineering Co., Ltd. (KEC) incorporates in Hong Kong since business in 1992 as a specialist contractor on  environmental services :- water supply ; drainage sewers and etc.KEC specialized in pipe cleaning using High Pressure  Water Jetting (HPWJ) techniques, inspection of drainage systems using Closed Circuit Television (CCTV), emptying of  grease traps, septic tanks and petrol interceptors (vacuum tankers (VT)).We also provide full range of special inspection  on Infrared (Thermal Image) survey, underwater sonar survey, confined space turnkey project.

    Drain cleaning operations are carried out to the UK standard as taught by Water Training International (WTi) and the  UK Association of High Pressure Water Jetting Contractors (AHPWJC).

    CCTV inspection operations are undertaken to the standards defined in the Sewerage Rehabilitation Manual Edn.3&4  (SRM3&4) and as specified in the Manual of Sewer Condition Classification (Edn.4) published jointly by UK Water  Industry & Operations Committee & Water Research Centre (WRc).Other standards such as NASSCO & AWWA (USA)  use similar standards that KEC are aware of and use when so directed by clients.

    These standards are widely used in Hong Kong and all government departments having responsibility for drainage  systems use the UK system as their standard.

    KEC maintains all necessary insurance for third party liability, workers compensation and all vehicle, plant &  equipment.