Despite your list of India firms, they pale in comparison to international heavyweights:
Largest conglomerates in the world
General Electric Company United States 141,900
China Pacific Insurance (Group) Co., Ltd. China 31,301
Jardine Matheson Holdings Ltd. Bermuda 17,971
Swire Pacific Ltd. Hong Kong 16,900
Industries Qatar Q.S.C. Qatar 15,953
Groupe Bruxelles Lambert SA Belgium 12,298
Qinghai Salt Lake Industry Group Co.,Ltd. China 11,891
China Resources Power Holdings Company Ltd. Hong Kong 10,899
Itochu Corporation Japan 10,189
Kingdom Holding Company Saudi Arabia 7,980
Marubeni Corporation Japan 7,971
Jaiprakash Associates Ltd India 6,867
Mitsubishi Chemical Holdings Corporation Japan 6,145
Genting Berhad Malaysia 5,869
Hana Financial Group Inc South Korea 5,852
CNP - Compagnie Nationale ? Portefeuille Belgium 5,348
Grupo De Inversiones Suramericana SA Colombia 4,807
Koc Holding AS Turkey 4,421
Enterprise GP Holdings LP United States 4,098
Exor SpA Italy 4,050
SM Investments Corp Philippines 3,821
Fukuoka Financial Group, Inc. Japan 3,735
Savola Group Company Saudi Arabia 3,346
Corporacion Financiera Alba, S.A. Spain 3,180
MEIJI Holdings Co.,Ltd. Japan 3,075
Unipol Gruppo Finanziario S.p.A. Italy 2,992
J. FRONT RETAILING Co., Ltd. Japan 2,932
Rentokil Initial plc United Kingdom 2,896
Nippon Paper Group Inc. Japan 2,877
Affiliated Managers Group, Inc. United States 2,725
Impulsora del Desarrollo y el Empleo en America Latina SAB de CV Mexico 2,538
Janus Capital Group, Inc. United States 2,488
China Yurun Food Group Ltd Bermuda 2,422
ASM Pacific Technology Ltd. Hong Kong 2,402
Ackermans & van Haaren N.V. Belgium 2,326
Mexichem, S.A. de C.V. Mexico 2,115
Alfresa Holdings Corporation Japan 2,103
MMC Corporation Berhad Malaysia 2,090
Daewoo International Corporation South Korea 2,041
National Industries Group (Holding) Kuwait 1,931
Holding MRSK Russia 1,899
Astro All Asia Network Plc Malaysia 1,890
Shun Tak Holdings Ltd. Hong Kong 1,849
Discount Investment Corporation Ltd. Israel 1,827
Lee & Man Paper Manufacturing Ltd Hong Kong 1,788
TAM SA Brazil 1,787
IT Holdings Corp. Japan 1,713
Solvac S.A. Belgium 1,711
Hargreaves Lansdown Plc United Kingdom 1,696
Santander Chile Holding S.A. Chile 1,569
Telefonica Moviles Peru Holdings S.A. Peru 1,543
Charter International plc Republic of Ireland 1,542
Financiere De Lodet SA France 1,523
Advanced Technology & Materials Co., Ltd. China 1,495
Xinyi Glass Holdings Ltd Hong Kong 1,470
FFP - Ste Fonciere Financiere & Part France 1,431
Compagnie Industriali Riunite (CIR) Italy 1,416
Compagnie du Cambodge S.A. France 1,351
Koor Industries, Ltd. Israel 1,325
Vector Limited New Zealand 1,323
Doosan Corporation Ltd. South Korea 1,303
Baoviet Holdings Vietnam 1,287
Alliance Holdings GP L.P. United States 1,274
Maire Tecnimont S.p.A. Italy 1,266
Energisa S.A. Brazil 1,224
Britvic PLC United Kingdom 1,218
Liberty Acquisition Holdings Corp. United States 1,192
Shanghai Shenhua Holdings Company Ltd China 1,163
G-Resources Group Limited Hong Kong 1,162
Jonjee Hi-Tech Industrial And Commercial Holding Co., Ltd. China 1,146
Trian Acquisition I Corp. United States 1,116
Exterran Holdings Inc. United States 1,086
Magnesita Refratarios SA Brazil 1,082
Yazicilar Holding A.S. Turkey 1,055
DCM Japan Holdings Co Ltd Japan 1,048
Pick 'n Pay Holdings Ltd. South Africa 1,043
LSR Group Russia 1,036
Zhejiang Zhongda Group Co., Ltd. China 992
Sapphire Industrials Corp. United States 984
Telling Telecom Holding Co., Ltd China 981
Tekfen Holding A S Turkey 954
Dongguan Development (Holdings) Co Ltd China 953
Eon Capital BHD Malaysia 946
Malaysian Bulk Carriers Berhad Malaysia 904
Wellstream Holdings PLC United Kingdom 900
KBC Ancora SCA Belgium 897
Jingtou Yintai Co., Ltd China 860
Poulina Group Holding SA Tunisia 841
Shanghai Qiangsheng Holdings Co Ltd China 827
Santos Brasil Participacoes SA Brazil 818
Kim Eng Holdings Limited Singapore 806
Wasion Group Holdings Limited Hong Kong 788
Hosken Consolidated Investments Ltd. South Africa 774
Pacific Corp South Korea 764
John Keells Holdings PLC Sri Lanka 735
BAM Investments Corp Canada 718
Kardan N.V Netherlands 716
Nan Hai Corporation Ltd. Hong Kong 709
COSCO International Holdings Limited Hong Kong 704
OM Holdings Ltd Bermuda 691