| 1 | Heilongjiang Haifeng Weiye Construction And Installation Engineering CO., LTD. Yushulantin | China | Jiamusi | Gate 14, South Side Xishu, Building 3, Huanan Zhaoyuan Pige Chen | Heilongjiang | 154000 | N/A | 2021 | $38,297,083,113 | 0 | N/A | N/A | 230822100053090 |
| 2 | Davila Loaiza Luis Alonso | Colombia | Manizales | Calle 97 C 32 43 | Caldas | N/A | N/A | 2021 | $34,693,400,000 | 700,000 | N/A | N/A | N/A |
| 3 | Inlaks Power Solutions LIMITED | Nigeria | Ikeja | O'Chendu House, Plot 6 Cocoa Industrial Road | Lagos | N/A | N/A | 2010 | $3,841,851,390 | 50 | N/A | N/A | 875531 |
| 4 | China Railway 23th Construction Bureau.ltd. | China | Chengdu | No.1 Auxiliary, Section West 2, No.10, 2nd Ring Road | Sichuan | 610072 | N/A | 2002 | $3,745,352,285 | 587 | N/A | N/A | 510109000067093 |
| 5 | Jilin Hongyu Construction Engineering CO., LTD. | China | Changchun | No.502, Comprehensive Building, No.4848, Ziyou Road, Economic de | Jilin | 130000 | N/A | 2021 | $3,476,343,706 | 150 | N/A | N/A | 220108110291698 |
| 6 | Chiyoda CORPORATION | Japan | Yokohama | 4-6-2, Minatomirai, Nishi-ku | Kanagawa | 220-0012 | N/A | 1948 | $3,064,434,114 | 3,419 | N/A | N/A | 3020001018029 |
| 7 | Avacon Netz GMBH | Germany | Helmstedt | Schillerstr. 3 | Helmstedt | 38350 | avacon.***** | 2017 | $2,980,899,488 | 2,134 | N/A | N/A | 38100B203312 |
| 8 | Mitsubishi Electric Building Solutions CORPORATION | Japan | Chiyoda-ku | 2-7-3, Marunouchi | Tōkyō | 100-0005 | N/A | 1954 | $2,979,402,034 | 12,050 | N/A | N/A | 5010001030412 |
| 9 | The Seventh Metallurgical Construction CO.,LTD | China | Guiyang | No.10, Baiyun (s) Rd., Baiyun Dist. | Guizhou | 550014 | N/A | 2008 | $2,303,754,558 | 1,964 | N/A | N/A | 520000000008910 |
| 10 | Aman European Elevators CO LIMITED | Saudiarabia | Al Khobar | P.o. Box : 3276, Behind Jarir Bookstore ( al Corniche) | Eastern Region | N/A | N/A | 2011 | $2,133,328,000 | 32 | N/A | N/A | 2051045166 |
| 11 | Anhui Wenergy Power Operation And Maintenance CO., LTD. | China | Hefei | Floor 3, Building D1, Yanfa Building, Qinglongtan Kejiyuan, Econ | Anhui | 230094 | N/A | 2010 | $2,104,985,449 | 310 | N/A | N/A | 340000000049402 |
| 12 | Scegc Equipment Installation Group Company LTD. | China | Xi'An | No.158, Zhuque Street North Section, Beilin District | Shaanxi | 710000 | N/A | 1984 | $2,093,991,578 | 3,604 | N/A | N/A | 610000100218910 |
| 13 | Aep Transmission Holding Company, LLC | USA | Columbus | 1 Riverside Plz 29th Fl | Franklin | 43215 | aep.***** | 2012 | $1,893,625,381 | 22 | N/A | N/A | 5214852 |
| 14 | China Gezhouba Dam Group First Engineering Co.,ltd. | China | Yichang | No.54, Dongshan Boulevard, Xiling District | Hubei | 443002 | N/A | 1997 | $1,779,908,317 | 2,728 | N/A | N/A | 420000000006592 |
| 15 | Nhindustries | France | Aix-en-provence | Cs 70402 | Bouches-du-rhône | 13290 | nhindustries.***** | 1992 | $1,741,811,468 | 6 | N/A | N/A | 38825586100048 |
| 16 | Somfy Denmark, Filial Af Somfy Nederland B.V., Holland | Denmark | Kerteminde | Dosseringen 20b | Syddanmark | 5300 | somfy.***** | 2015 | $1,595,922,746 | 6 | N/A | N/A | 36540745 |
| 17 | China Nuclear Industry 24 Construction Co.,ltd. | China | Beijing | No.51, Xinggong E. Street, Dongyanjiao Economic Technology Devel | Beijing | 621022 | N/A | 1981 | $1,576,044,693 | 5,008 | N/A | N/A | 510000000102704 |
| 18 | Van Wijnen Smart Assembly B.V. | Netherlands | Heerenveen | K R Poststraat 101 | Friesland | 8441 EN | N/A | 2021 | $1,551,998,741 | 6 | N/A | N/A | 72236434 |
| 19 | Van Wijnen Smart Assembly 2.0 B.V. | Netherlands | Heerenveen | K R Poststraat 101 | Friesland | 8441 EN | N/A | 2021 | $1,551,998,741 | 6 | N/A | N/A | 82417725 |
| 20 | Scegc NO.6 Construction Engineering Group Co.,ltd. | China | Xianyang | No.33, Renmin East Road, Weicheng District | Shaanxi | 712099 | N/A | 1985 | $1,547,762,662 | 1,503 | N/A | N/A | 610000000001017 |
| 21 | Talcher Thermal Power Station | India | New Delhi | 7 Ntpc Bhavan Scope Complex | Delhi | 110003 | N/A | 2011 | $1,512,600,000 | 20,000 | N/A | N/A | N/A |
| 22 | Scegc NO.1 Construction Engineering Group Company LTD. | China | Xi'An | No.199, Taibai North Rd., Beilin Dist. | Shaanxi | 710068 | N/A | 1994 | $1,472,647,463 | 1,763 | N/A | N/A | 610000000007705 |
| 23 | Shandong Junhui Construction Group CO., LTD. | China | Taian | Yiyang Industrial Park, Feicheng | Shandong | 271000 | N/A | 2004 | $1,284,357,723 | 1,964 | N/A | N/A | 370983228008514 |
| 24 | Zhengzhou Jianjian Security Technology CO., LTD. Puyang Branch | China | Puyang | No. 43 Shidougu Village, Hucun Township | Henan | 457000 | N/A | 2021 | $1,282,798,175 | 1 | N/A | N/A | 410993000126761 |
| 25 | Hebei Installation Engineering Co.,ltd. | China | Shijiazhuang | No.296, Xinhua Road, Qiaoxi District | Hebei | 050099 | N/A | 1980 | $1,239,900,563 | 2,774 | N/A | N/A | 130000100001949 |
| 26 | Siemens Gamesa Renewable Energy S.A.S. | France | Courbevoie | Immeuble le Colisee - Batiment A | Hauts-de-seine | 92400 | N/A | 2016 | $1,234,950,380 | 172 | N/A | N/A | 82361980400052 |
| 27 | Otis | France | Puteaux | 23-27-tour Defense Plazza | Hauts-de-seine | 92800 | otis.***** | 1954 | $1,161,869,460 | 4,798 | N/A | N/A | 54210780003943 |
| 28 | Alyans, OOO | Russia | Moskva | D. 13 Str. 16 Pom. Ii Kom. 300a, Per. Perevedenovski | Moskva | 105082 | N/A | 2022 | $1,124,177,023 | 1 | N/A | N/A | 77439605 |
| 29 | Zhejiang Industrial Equipment Installation Group CO.,LTD | China | Hangzhou | No. 21, Kaiyuan Road | Zhejiang | 310002 | N/A | 1958 | $1,121,678,976 | 2,011 | N/A | N/A | 330000000031489 |
| 30 | Saipem Denmark, Filial Af Saipem LIMITED, United Kingdom | Denmark | København | Vendersgade 28, Sal St | Hovedstaden | 1363 | N/A | 2020 | $1,100,583,267 | 6 | N/A | N/A | 41864206 |
| 31 | Abb Holding AS | Norway | Sandvika | Bygg M Snaroyveien 30 | Viken | 1360 | abb.***** | 1895 | $1,081,133,211 | 500 | N/A | N/A | 911374285 |
| 32 | China Construction Fourth Engineering Division Installation Engineering CO., LTD. | China | Guangzhou | 6-7/f, Building C2, Greenland Central Plaza, Shenzhou Road, Huan | Guangdong | 510663 | N/A | 1980 | $1,025,536,947 | 511 | N/A | N/A | 520000000071849 |
| 33 | Postech (L.L.C) | United Arab Emirates | Dubai | Dubai, Khalid Bin al Waleed | Dubai | N/A | N/A | 2002 | $961,766,167 | 10,001 | N/A | N/A | 534178 |
| 34 | Hps | United Arab Emirates | Dubai | 15137 | Dubai | N/A | N/A | N/A | $961,670,000 | 10,000 | N/A | N/A | N/A |
| 35 | Hps LLC | United Arab Emirates | Dubai | 15137 | Dubai | N/A | N/A | N/A | $961,670,000 | 10,000 | N/A | N/A | N/A |
| 36 | Marigliano SPA | Italy | Napoli | Corso Vittorio Emanuele 110/5 | Napoli | 80121 | N/A | 2012 | $899,507,915 | 135 | N/A | N/A | IT07169051211 |
| 37 | Jiangsu Qi'an Construction Group CO., LTD. | China | Qidong | 239 Jianshe South Road | Jiangsu | 226200 | N/A | 1989 | $873,601,095 | 7,000 | N/A | N/A | 320681000002408 |
| 38 | Hanyang Eng CO., LTD. | Southkorea | Hwaseong | 72 Yeongtong-ro 26beon-gil | Gyeonggi | 18380 | N/A | 1988 | $851,758,374 | 1,263 | N/A | N/A | 1248137874 |
| 39 | Primetals Technologies Austria GMBH | Italy | Bressanone | Via Elvas 8 | Bolzano | 39042 | N/A | 2021 | $751,454,372 | 40 | N/A | N/A | IT03137120212 |
| 40 | Abb AS | Norway | Sandvika | Bygg M Snaroyveien 30 | Viken | 1360 | abb.***** | 2000 | $740,976,206 | 1,511 | N/A | N/A | 982085160 |
| 41 | Sungdo Engineering & Construction Co.,ltd. | Southkorea | Gumi | 42 Yeongdong-daero 106-gil, Gangnam-gu | North Gyeongsang | 06172 | N/A | 1988 | $717,720,698 | 661 | N/A | N/A | 2208110950 |
| 42 | Xiamen Minxin Construction Engineering Zhuanxiang CO., LTD. | China | Xiamen | No.37, Zhenhai Road | Fujian | 361003 | N/A | 2000 | $708,501,840 | 9,368 | N/A | N/A | 350203200044047 |
| 43 | Daeah Engineering & Construction CO., LTD. | Southkorea | Seoul | 606 Seobusaet-gil, Geumcheon-gu | Seoul | 08504 | N/A | 1979 | $682,108,921 | 665 | N/A | N/A | 2138611621 |
| 44 | Walbridge Industrial Process LLC | USA | Detroit | 777 Woodward Ave Ste 300 | Wayne | 48226 | walbridge.***** | 2011 | $658,796,530 | 65 | N/A | N/A | 801619859 |
| 45 | Huizhou Zhiyi Industry CO., LTD. | China | Huizhou | No.607, Building 2, No.6 Jinhai Xinyuan, 2, Huizhou Dayawan Aoto | Guangdong | 516000 | N/A | 2021 | $625,680,000 | 3 | N/A | N/A | 441304000127195 |
| 46 | General Electric International Operations Company, INC. | Hongkong | Causeway Bay | 28/f Lee Gdn Two | Wan Chai District | N/A | N/A | 1984 | $623,931,000 | 150 | N/A | N/A | 06840949 |
| 47 | Kone | France | Nice | Aeropole Zac de L Arenas | Alpes-maritimes | 06000 | kone.***** | 1959 | $597,701,230 | 2,000 | N/A | N/A | 59205230201860 |
| 48 | The 6th Engineering CO., LTD. Of China Railway 11 Bureau Group | China | Xiangyang | No.2, Qilihe Road, Hi-and-new Tech Park | Hubei | 441003 | N/A | 2007 | $585,486,473 | 731 | N/A | N/A | 420600000095573 |
| 49 | Element Logic Holding AS | Norway | Jessheim | Dyrskuevegen 26 | Viken | 2040 | elementlogic.***** | 2021 | $577,333,706 | 500 | N/A | N/A | 927163144 |
| 50 | Vestas Italia SRL | Italy | Taranto | Via Ludovico Ariosto 12 | Taranto | 74123 | vestas.***** | 1997 | $554,640,663 | 507 | N/A | N/A | IT02170340737 |