Blackstone-backed Sona BLW Precision Forgings (Sona Comstar) fairness shares are proposed to be listed on BSE and NSE. (Picture: Sona Comstar) Sona BLW Precision Forgings’ (Sona Comstar) Rs 5,550-crore preliminary public providing (IPO) will open for subscription on June 14, 2021, at a worth band of Rs 285-291 per share. Blackstone-backed Sona BLW challenge will