Indian Railways :
Rail Coach Factory,
Integral Coach Factory,
Modern Coach Factory,
Diesel Locomotive Works,
Diesel Loco Modernization Works,
Southern, Eastern, Western & Northern Railways
Utility Boards : PSPCL, MPMKVVCL, Torrent Power Ltd, BSES, Tata Power, J&K, HESCOM, NBPDCL
Power Generation & Distributions : NTPC, Thermal Power Plants, LNT, REL
Telecommunication Industries : Samsung, Nokia, BSNL, Panasonic, MTT
UPS Inverter & Solar Industries : Microtek, Luminous, Su-kam, Exide, V-Gaurd, Genus, Micromax, VNL
Steel & Fertilizer Industries : SAIL-Bokaro & Bhilai, NFL
Electrical Panal Control, Transformers & Switchgears Industries : C&S, Legrand, Siemens, Hind Rectifier, Schneider, ISG, SSK, HPL, Vijai, Popular Switchgears, Servomax
Defence : Ordnance Factory, Kanpur
Wire/Cable Harness Industries : LS Cable, UCL, Nicco Cable, Apar, Pricol Inds. Windsor
Others :
| 3M India Limited | Emami Cement Limited | Jindal Stainless Limited |
| Bharat Earthmovers Ltd. (BEML) | EMC Limited | Northern Coalfields Limited |
| Bharat Heavy Electricals Ltd.(BHEL) | Godrej Boyce & Mfg. Co. Ltd. | Omani Agate Systems Pvt. Ltd. |
| Besco Limited | Hero Honda Ltd. | Punjab Communication Limited |
| Birla Corporation Limited | ITI Limited | Rites Limited |
| Rail Wheel Factory | Sudhir Gensets Limited | Salzer Electronics Limited |
| TVS Interconnect Systems Ltd. | Titagarh Wagons Limited |