- Krishna Maruti Limited.(Gurgaon) ,
- NPL New Delhi,
- DVG Laboratories & Consultants Pvt. Ltd. (Gurgaon),
- Wahi Sons Pvt. Ltd.(Manesar, Bhewadi),
- Jns Instruments Ltd. (Manesar, Pune, Gugrat),
- Elofic Industries Ltd. (Faridabad),
- Canan Testing Services. (Delhi, Ahmedabad, Chennai),
- FIE Research Institute. (Ichalkaranji),
- KSS-Abhishek Safety Systems Pvt. Ltd.(Manesar)
- Universal Instruments. (Pune), ARAI. (Pune),
- EIE Instruments Pvt. Ltd. (Ahmedabad),
- KEI Industries Ltd. (Bhewadi)
- Autoliv India Pvt. Ltd. (Manesar, Rudrapur),
Force Techno Engineers, (Chennai),
SKG Project & Engg. Pvt. Ltd. (Mumbai)
National Center For Quality Calibration. (Ahmedabad),
Swaraj Automotive Ltd. (Punjab),
Signode India Limited, (Rudrapur)
Stork Rubber Products Pvt. Ltd, (Gurgaon, Chennai),
Sigma Corportaion India Limited.(Manesar).