2010

• The construction Technology Review and Certification (Sewerage Technology)

2009

• The construction Technology Review and Certification (Sewerage Technology)

2008

• The construction Technology Review and Certification (Sewerage Technology)

2007

• The construction Technology Review and Certification (Sewerage Technology)

2006

• The construction Technology Review and Certification (Sewerage Technology)

2005

• The construction Technology Review and Certification(Sewerage Technology)

2004

• The construction technology examination proof business（Sewerage technology)

2003

• Project of reviewing and certifying the construction technology (Sewerage technology)
• Project of reviewing and certifying the construction technology (Sewerage technology)-1
• Project of reviewing and certifying the construction technology (Sewerage technology)-2

2001

• Project of reviewing and certifying the construction technology (Sewerage technology)-1
• Project of reviewing and certifying the construction technology (Sewerage technology)-2

2000

• Sewerage technology and the project of reviewing and certifying the technology

1999

• Sewerage technology and the project of reviewing and certifying the technology

1998

• Sewerage technology and the project of reviewing and certifying the technology

1997

• Sewerage technology and the project of reviewing and certifying the technology

1996

• Sewerage technology and the project of reviewing and certifying the technology

1995

• Sewerage technology and the project of reviewing and certifying the technology

1994

• Sewerage technology and the project of reviewing and certifying the technology

1993

• Sewerage technology and the project of reviewing and certifying the technology