Caltron Clays & Chemicals Pvt Ltd is No.1 Pharmaceutical and Cosmetic Raw Material manufacturers and suppliers in India. Caltron Clays is an ISO 9001 Certified & CRISIL rated company, the only of its kind in the minerals industry. Caltron Clays is a recognized export house specializing in the processing and export of mineral, oxide, and chemicals. CALTRON is in it’s 20th year of su... https://caltronclays.com/leading-formulators-trust-the-no-1-oyster-shell-calcium-carbonate-powder-supplier-in-india-for-high-absorption-formulations-in-2025/