• PT. Adhi Karya Tbk (2008 - 2010)
  • PT. Baruna Raya Logistic (2008)
  • PT. BlueScope Steel Indonesia (2006)
  • PT. Dharma Samudera Fishing Industries, Tbk (2007)
  • PT. Encona Inti Industri (2008)
  • PT. Fajar Mas Murni (2008 - 2010)
  • PT. Graha Menara Hijau (2007)
  • PT. Inti Karya Persada Tehnik (2002 - 2011)
  • PT. Kangean Energy Indonesia (2008 - 2011)
  • PT. KELSRI (2008 - 2011)
  • PT. Nisconi Indonesia (2006)
  • PT. Siemens Indonesia (2008)
  • PT. Tripatra Engineering (2009)
  • PT. Truba Jurong Engineering (2004)
  • PT. WIKA (2009)