Gurugram-based Sona BLW Precision Forgings Ltd. (Sona Comstar) has formed an electric vehicle (EV) market-focused joint venture (JV) with China's foundry operator Jinnaite Machinery (JNT). In the initial phase, Sona Comstar will invest $12 million, while JNT will provide $8 million worth of assets and business to the JV, the Indian company announced in an exchange filing.