References

Turkish Petroleum Refineries Co. (Tüpraş): web site

Petkim Petrochemical Holding Co. (Petkim): web site

Ereğli Demir ve Çelik Fabrikaları T.A.Ş. (Erdemir): web site

AGE Construction and Trading Incorporation: web site
Aksu Group: web site
B&M Engineering: web site
Cemil Özgür Group: web site
Cengiz Holding: web site
Çiftay Construction Contracting and Trading Co.: web site
Demir Export A.Ş.: web site
Doğuş Construction: web site
ERG Construction Trade and Industry Co. Inc.: web site
Eti Copper Inc.: web site
Fernas Construction: web site
Göçay Construction Contracting & Trade Co. Inc.: web site
HGG Construction Industry and Trade Ltd. Co.: web site
IC Holding: web site
Kolin Construction: web site
Limak Construction: web site
MAPA Construction & Trade Co. Inc.: web site
Onur Contracting Transportation and Trading Ltd. Co.: web site
Peker Construction: web site

Pi Makina: web site
TÜPRAG Metal Madencilik Sanayi ve Ticaret A.Ş.: web site