| Name | Type | Sector | Country | Joined On |
|---|---|---|---|---|
| Eczacibasi Holding Co. | Company | General Industrials | Türkiye | 26-May-2006 |
| Koc Holding | Company | General Industrials | Türkiye | 05-Apr-2006 |
| Dorce Prefabricated Buildings and Profile Industry Co. Ltd | Company | Diversified | Türkiye | 31-Aug-2002 |
| Akfen Holding Co. Inc. | Company | General Industrials | Türkiye | 02-Jul-2002 |
| ARGE Consulting | Small or Medium-sized Enterprise | Industrial Support Services | Türkiye | 29-May-2002 |
| Turkish Society for Quality | Business Association Local | Not Applicable | Türkiye | 29-May-2002 |