| Name | Type | Sector | Country | Joined On |
|---|---|---|---|---|
| GAIN Construction Industry Trade LLC (GAİN İnşaat Sanayi ve Ticaret Limited Şirketi) | Company | Construction & Materials | Turkey | 2019-05-29 |
| Calik Enerji A.S. | Company | Construction & Materials | Turkey | 2019-04-26 |
| ENKA Insaat ve Sanayi A.S. | Company | Construction & Materials | Turkey | 2017-11-17 |
| Nurol Insaat ve Ticaret A.S. | Company | Construction & Materials | Turkey | 2017-08-10 |
| Gunak Insaat San. ve Tic. A.S. | Small or Medium-sized Enterprise | Construction & Materials | Turkey | 2016-12-14 |
| Ronesans Holding | Company | Construction & Materials | Turkey | 2015-09-22 |
| Limak Group | Company | Construction & Materials | Turkey | 2014-12-26 |
| Akcansa Cimento Sanayi vs Ticaret A.S. | Company | Construction & Materials | Turkey | 2014-05-30 |
| Cimsa Cimento Sanayi ve Ticaret A.S. | Company | Construction & Materials | Turkey | 2013-12-06 |
| Anel Group | Company | Construction & Materials | Turkey | 2013-09-03 |
| ESER Contracting and Industry Co., Inc. | Small or Medium-sized Enterprise | Construction & Materials | Turkey | 2007-10-03 |
| ESPM Eser Project and Engineering Co. Inc. | Small or Medium-sized Enterprise | Construction & Materials | Turkey | 2007-09-06 |