HSCL Himadri Speciality Chemical Ltd Credit Rating Changes Announcement 2026 - Rating upgrade ICRA ESG rating for Himadri upgraded to 82 (Exceptional) from 80, reflecting strong ESG performance; letter dated 12 May 2026..Find Corporate Announcements for Press Releases, AGM, Insider Trading & SAST, Results and Corporate Action for Himadri Speciality Chemical Ltd