Sistema Shyam TeleServices Limited (SSTL) that nationally operates its telecom services under the MTS brand with over 16 million wireless customers....
Sistema Shyam TeleServices Limited (SSTL) that nationally operates its telecom services under the MTS brand with over 12 million wireless customers....
Sistema Shyam TeleServices Ltd (SSTL), which nationally operates its telecom services under the MTS brand with over 11 million wireless customers,....