1. General industrial indicators of rare earth deposits Second, rare earth concentrate product quality indicators Third, high rare earth iron ore quality standards 4. Quality standards for mixed rare earth oxides of sorghum and strontium V. Quality standards for cerium oxide enrichment 6. Quality standards for cerium oxide enrichment VII. Quality standards for cerium oxide enrichment Eight, heavy rare earth oxide enrichment quality standards IX. Quality indicators of other rare earth compounds Home Floor Fan,Cooling Floor Fan,Portable Floor Fan,Commercial Electric Floor Fan Foshan kanasi electrical co.,ltd , https://www.fskanasifan.com