TATACHEM Tata Chemicals Ltd Credit Rating Changes Announcement 2024 - Credit Ratings Update TATA CHEMICALS LTD. - CRISIL reassigned ratings for NCDs at CRISIL AA+/Stable and reaffirmed Commercial Paper at CRISIL A1+..Find Corporate Announcements for Press Releases, AGM, Insider Trading & SAST, Results and Corporate Action for Tata Chemicals Ltd