We may get further info from the SCL 2018 Annual Report when it is issued. 

From the 2017 report:

New Facilities 6 ” Wa f e r F a b L i n e E x p a n s i o n : Commensurate with process up-gradation needs, 6” Wafer Fab-Line expansion is in progress. Clean rooms and other support utilities in the available space contiguous to the existing 6” Wafer Fab Line, are being set up for installation of the Process equipment identified to augment the 6” Wafer Fab Line. MOCVD Facility: For the proposed Metal Organic Chemical Vapour Deposition (MOCVD) system, Cleanrooms and associated utilities are required to be established for which existing available buildings have been identified. Design & technical specifications for installing Class 100/1000 Cleanroom and Utilities distribution to support the MOCVD facility was completed and tendering process is in progress. Chemical Lab: Chemical lab is being established for supporting activities for extension of useful life and for testing and indigenization of high purity chemical sused in the wafer fabrication process. The support utilities and cleanrooms were designed and implementation is underway. Office Automation In line with e-Governance plan of DOS/ISRO,