Global Salt Market Size, Share & Demand Report By Product Type (Rock Salt, Solar Salt, Vacuum Evaporated Salt), By Grade (Food Grade, Industrial Grade, Pharmaceutical Grade, Water Treatment Grade), By Application (Food Processing, Chemical Processing, De-icing, Water Treatment, Agriculture, Pharmaceuticals, Oil & Gas Drilling), By Distribution Channel (Direct B2B Sales, Supermarkets/Hypermarkets, Convenience Stores, Online Retail), By Region & Segment Forecasts, 2026–2031