Section 05 MINERAL PRODUCTS 25 SALT;SULPHUR;EARTHS AND STONE;PLASTERING MINERALS, LIME AND CEMENT 25 28 BORIC ACID CONTAINING NOT MORE THAN 85% OF H3BO3 CALCULATED ON THE Commodity Code Description 25 28 00 NATURAL BORATES AND CONCENTRATES THEREOF (WHETHER OR NOT CALCINED), BUT .....