Istanbul Chamber of Industry, ISO, made public the results of its report on the top 500 industrial enterprises of Turkey. According to the report, TUPRAS again came the first as it happened since 2005.

Turkey's Electricity Generation Corp. (EUAS) ranked the second and Ford Automotive the third according to the report.

Following is the top 100 companies on ISO list:

2010 2009 Company Production-based sales (net-TL) 1 1 TUPRAS-Turkiye Petrol Rafinerileri A.S. 20,819,067,010 2 2 EUAS Elektrik Uretim A.S. Genel Mudurlugu 9,740,496,745 3 6 Ford Otomotiv Sanayi A.S. 6,004,819,331 4 3 Oyak-Renault Otomobil Fabrikalari A.S. 5,871,042,516 5 5 TOFAS Turk Otomobil Fabrikasi A.S. 5,448,847,625 6 4 Arcelik A.S. 5,108,831,127 7 8 Aygaz A.S. 3,969,130,023 8 7 Eregli Demir ve Celik Fabrikalari T,A.S. 3,715,823,817 9 11 Icdas Celik Enerji Tersane ve Ulasim San. A.S. 3,523,477,229 10 12 Iskenderun Demir ve Celik A.S. 3,239,662,761 11 10 Habas Sinai ve Tibbi Gazlar Istihsal Endustrisi A.S. 2,827,821,839 12 14 PETKIM Petrokimya Holding A.S. 2,789,524,479 13 9 Vestel Elektronik San. ve Tic. A.S. 2,422,174,090 14 13 Toyota Otomotiv Sanayi Turkiye A.S. 2,326,270,180 15 22 Mercedes-Benz Turk A.S. 2,221,362,664 16 16 Unilever San. ve Tic. Turk A.S. 2,099,831,304 17 15 Turkiye Seker Fabrikalari A.S. 2,072,503,647 18 18 Turkiye Komur Isletmeleri Kurumu 2,007,646,209 19 20 Colakoglu Metalurji A.S. 1,947,112,529 20 17 BSH Ev Aletleri San. ve Tic. A.S. 1,929,869,218 21 19 Ipragaz A.S. 1,875,676,204 22 26 Milangaz LPG Dagitim Tic. ve San. A.S. 1,854,035,796 23 28 Borcelik Celik San. Tic. A.S. 1,619,274,756 24 38 Er-Bakir Elektrolitik Bakir Mamulleri A.S. 1,529,585,000 25 23 Kroman Celik Sanayii A.S. 1,525,203,328 26 29 Sarkuysan Elektrolitik Bakir San. ve Tic. A.S. 1,472,838,227 27 24 Goldas Kuyumculuk Sanayi Ithalat Ihracat A.S. 1,460,119,660 28 45 Toscelik Profil ve Sac Endustrisi A.S. 1,454,653,589 29 25 Coca-Cola Icecek A.S. 1,441,793,814 30 30 Turkiye Petrolleri Anonim Ortakligi 1,371,303,217 31 33 AKSA Akrilik Kimya San. A.S. 1,309,712,086 32 21 PHILSA Philip Morris Sabanci Sigara ve Tutunculuk San. ve Tic. A.S. 1,302,087,088 33 27 Vestel Beyaz Esya San. ve Tic. A.S. 1,220,609,175 34 36 Konya Seker San. ve Tic. A.S. 1,187,080,538 35 35 Diler Demir Celik Endustri ve Tic. A.S. 1,186,669,326 36 32 Cay Isletmeleri Genel Mudurlugu 1,173,076,150 37 43 Hyundai Assan Otomotiv San. ve Tic. A.S. 1,150,155,807 38 41 Kaptan Demir Celik Endustrisi ve Ticaret A.S. 1,143,498,903 39 31 Ak Gida San. ve Tic. A.S. 1,083,780,342 40 37 Bosch San. ve Tic. A.S. 1,023,734,995 41 84 Turk Traktor ve Ziraat Makineleri A.S. 1,021,679,933 42 46 KARDEMIR Karabuk Demir Celik San. ve Tic. A.S. 1,000,839,174 43 56 Eti Maden Isletmeleri Genel Mudurlugu 981,594,635 44 57 Yildiz Entegre Agac San. ve Tic. A.S. 981,584,172 45 40 Aselsan Elektronik San. ve Tic. A.S. 978,949,024 46 44 BANVIT Bandirma Vitaminli Yem San. A.S. 971,999,526 47 48 Borusan Mannesmann Boru San. ve Tic. A.S. 956,676,052 48 49 BRISA Bridgestone Sabanci Lastik San. ve Tic. A.S. 924,699,665 49 47 Kastamonu Entegre Agac San. ve Tic. A.S. 914,983,394 50 51 Izmir Demir Celik Sanayi A.S. 910,297,942 51 34 Anadolu Efes Biracilik ve Malt San. A.S. 909,831,432 52 59 Yazici Demir Celik Sanayi ve Turizm Ticaret A.S. 898,645,350 53 54 Toros Tarim San. ve Tic. A,S 892,277,815 54 63 Assan Aluminyum San. ve Tic. A.S. 885,466,973 55 82 TUSAS- Turk Havacilik ve Uzay San. A.S. 851,812,139 56 67 Yucel Boru ve Profil Endustrisi A.S. 843,048,327 57 53 Firat Plastik Kaucuk San. ve Tic. A.S. 828,306,331 58 75 Nursan Metalurji Endustrisi A.S. 819,763,469 59 66 SUTAS Sut Urunleri A.S. 806,449,991 60 55 Akcansa Cimento San. ve Tic. A.S. 799,888,727 61 52 Siemens San. ve Tic. A.S. 798,211,995 62 61 Turk Pirelli Lastikleri A.S. 796,888,287 63 76 Mogaz Petrol Gazlari A.S. 772,701,510 64 64 Sanko Tekstil Isletmeleri San. ve Tic. A.S. 772,179,259 65 73 Hayat Kimya Sanayi A.S. 771,569,879 66 62 C,P, Standart Gida San. ve Tic. A.S. 737,878,076 67 39 Areva T&D Enerji Endustrisi A.S. 735,400,719 68 81 Delphi Automotive Systems Ltd. Sti. 731,720,691 69 83 HES Hacilar Elektrik San. ve Tic. A.S. 710,646,967 70 80 Abalioglu Yem Soya ve Tekstil San. A.S. 703,711,995 71 69 Tat Konserve San. A.S. 685,833,478 72 68 Soma Elektrik Uretim ve Ticaret A.S. 684,495,337 73 60 Oltan Gida Mad, Ihr. Ith. ve Tic. Ltd. Sti. 681,704,007 74 86 Eti Gida San. ve Tic. A.S. 681,026,270 75 74 CIMSA Cimento San. ve Tic. A.S. 673,599,079 76 65 S.S. Trakya Yagli Tohumlar Tarim Satis Kooperatifleri Birligi 658,595,170 77 136 Advansa Sasa Polyester Sanayi A.S. 645,705,323 78 88 BMC San. ve Tic. A.S. 644,975,536 79 50 Ulker Cikolata Sanayi A.S. 642,810,718 80 - - - 81 91 Trakya Cam San. A.S. 606,131,246 82 78 Boytas Mobilya San. ve Tic. A.S. 600,200,224 83 92 Erpilic Entegre Tavukculuk Uretim Pazarlama ve Tic. Ltd. Sti. 596,811,202 84 116 Noksel Celik Boru Sanayi A.S. 596,179,626 85 77 Ekinciler Demir ve Celik San. A.S. 595,734,172 86 72 JTI Tutun Urunleri Sanayi A.S. 590,434,738 87 99 Korteks Mensucat San. ve Tic. A.S. 590,073,815 88 93 Keskinoglu Tavukculuk ve Damizlik Isletmeleri San. Tic. A.S. 588,201,443 89 - Vestel Dijital Uretim San. A.S. 575,911,460 90 87 Makina ve Kimya Endustrisi Kurumu Genel Mudurlugu 575,608,556 91 100 Honda Turkiye A.S. 572,774,517 92 - Besler Gida ve Kimya San. ve Tic. A.S. 566,015,577 93 105 Pinar Sut Mamulleri Sanayi A.S. 563,201,448 94 95 BEYPI Beypazari Tarimsal Uretim Pazarlama San. ve Tic. A.S. 553,337,283 95 58 Kayseri Seker Fabrikasi A.S. 550,884,307 96 70 Nursan Celik Sanayi ve Haddecilik A.S. 545,707,106 97 128 Ege Celik Endustrisi San. ve Tic. A.S. 542,078,831 98 124 Park Teknik Elektrik Madencilik Turizm San. ve Tic. A.S. 540,749,683 99 - Senpilic Gida Sanayi A.S. 539,730,161 100 103 Sider Dis Ticaret A.S. 537,642,486