• Yılgenci A.Ş.

  • HY İnşaat

  • Kocaeli Free Trade Zone Administrative Building

  • Uzunçiftlik Truckers Cooperative

  • Kocaeli Chamber of Independent Accountant and Financial Advisors

  • Areva T&D Energy Industry

  • Sakarya Chamber of Independent Accountant and Financial Advisors (SMMMO)

  • Honda Haldızlar

  • Seas Betkosan

  • Pekdemir Constrution

  • Yücel Pipe and Profile Industry Inc.

  • Kromel Machine Industry Inc.

  • Öztorun Oto

  • Çağın Eye Hospital

  • Önder LTD.

  • Çemsan Steel Ltd. Co.

  • ANT GROUP

  • Aytemur Petrokimya (TORQUOIL)

  • KTC Social Facilities

  • Sakarya Chamber of Commerce