Engineer of the Project Management Division of the Drainage Services Department (DSD), Mr CHEN Ka-yin, says that instead of open up an entire road section, the trenchless pipe rehabilitation works only needs to excavate a temporary shaft for replacing and rehabilitating pipes.

Engineer of the Project Management Division of the Drainage Services Department (DSD), Mr CHEN Ka-yin, says that instead of open up an entire road section, the trenchless pipe rehabilitation works only needs to excavate a temporary shaft for replacing and rehabilitating pipes.

Engineer of the Project Management Division of the Drainage Services Department (DSD), Mr CHEN Ka-yin, says that instead of open up an entire road section, the trenchless pipe rehabilitation works only needs to excavate a temporary shaft for replacing and rehabilitating pipes.