CRISIL upgrades Sterlite Tech’s long-term rating outlook to CRISIL AA-/Positive Sterlite Tech [BSE: 532374, NSE: STRTECH], an end-to-end global technology leader in smarter digital networks, has received CRISIL’s rating upgrade to CRISIL AA-/Positive on its long-term bank facilities while reaffirming the rating April 19, 2017 News