• AFCONS Infrastructure Ltd.
• BBJ Construction Co. Ltd.
• Bharat Heavy Electricals Ltd.
• Brahmaputra Infrastructure Ltd.
• Bridge & Roof Co. (I) Ltd.
• Border Roads Organisation
• C & C Construction Ltd.
• Bridge & Roof Co. (I) Ltd.
• Delhi Metro Rail Corporation Ltd.
• Gammon India Ltd.
• Hindustan Construction Ltd.
• Hooghly river Bridge Commissioners.
• IRCON International Ltd.
• ITD Cementation Ltd.
• Jaiprakash Industries Ltd.
• J & K Projects Construction Corpn. Ltd.
• Kolkata Metropolitan Development Authority.
• Larsen & Tubro Ltd.
• Mackintosh Burn Ltd.
• Simplex Infrastructure Ltd.
• Thermax India.
• Tantia Construction Ltd.
• Valecha Engineering Ltd.
• Vijay Nirman Co. Pvt. Ltd.