 M/s. Alstom Projects India Limited, Kolkata & Chennai
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 M/s. Ansoldo, Chennai
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 M/s. Bharat Heavy Electricals Limited – Hyderabad & Ranipet
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 M/s. Coen Bharat Limited
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 M/s. Cethar Ltd., Trichy
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 M/s. Dalmia Cements Limited
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 M/s. Fives cail - KCP Limited
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 M/s. Flsmidth Private Limited, Denmark
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 M/s. Gebr. Pfeiffer India Limited
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 M/s. GMR Industries Limited
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 M/s. Graphite India Limited, Durgapur
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 M/s. HEG Limited, Bhopal
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 M/s. Humboldt wedag India Pvt. Ltd
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 M/s. Jai Balaji Industries Limited, Durgapur
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 M/s. JSW Limited – Bellary & Salem
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 M/s. Lanco Industries Limited
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 M/s. Loesche India Pvt. Ltd
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 M/s. Madras Cements Limited
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 M/s. Orissa Cements Limited
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 M/s. Sesa Industries Limited, Goa
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 M/s. Steel Authority of India Limited, Bhadravathi
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 M/s. Tata Metaliks Limited, Kharagpur
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 M/s. The India Cements Limited
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 M/s. Thermax India Pvt. Ltd
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 M/s. Ultra Tech Cements Limited
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