As you Asking for the Contact Details of the Antrix Corporation Limited Chennai let me tell you that Antrix Corporation Limited is Located in Bengaluru Not in the Chennai

Antrix Corporation Limited (ACL), is a wholly owned Government of India Company, under the administrative control of Department of Space (DOS).

About the Establishment

Antrix Corporation Limited was incorporated as a private limited company owned by Government of India in September 1992 as a Marketing arm of ISRO for promotion and commercial exploitation of space products, technical consultancy services and transfer of technologies developed by ISRO.

Another major objective is to facilitate development of space related industrial capabilities in India.

Services :

Transponder Provisioning Services
Launch Services
Remote Sensing Services
Spacecraft, Subsystems and Services
Mission Support Services
Ground Infrastructure for Space based Needs

Contact Detials :
Antrix Corporation Limited (ACL)
Antrix Complex,
New BEL Road, Bengaluru - 560 231