| 6804.21.00 | 00 | Other millstones, grindstones, grinding wheels and the like: |  |  |  |  | 
| 6804.21.00 | 00 | Of agglomerated synthetic or natural diamond | No. | Free |  | 30% | 
| 6804.22 |  | Of other agglomerated abrasives or of ceramics: |  |  |  |  | 
| 6804.22.10 | 00 | Bonded with synthetic resins | kg | 5¢/kg + 2% | Free (A,AU,BH,CA, CL,E,IL,J,JO, MA,MX,P,SG) | $1.10/kg +  40% | 
| 6804.22.40 | 00 | Other: |  |  |  |  | 
| 6804.22.60 | 00 | Other | X | Free |  | 30% | 
| 6804.23.00 | 00 | Of natural stone | No. | Free |  | Free | 
| 6804.30.00 | 00 | Hand sharpening or polishing stones | No. | Free |  | Free | 
| 6805 |  | Natural or artificial abrasive powder or grain, on a base of textile material, of paper, of paperboard or of other materials, whether or not cut to shape or sewn or otherwise made up: |  |  |  |  | 
| 6805.10.00 | 00 | On a base of woven textile fabric only | kg | Free |  | 20% | 
| 6805.30 |  | On a base of other materials: |  |  |  |  | 
| 6805.30.10 | 00 | Articles wholly or partly coated with abrasives, in the form of sheets, strips, disks, belts, sleeves or similar forms | kg | Free |  | 20% | 
| 6805.30.50 | 00 | Other | kg | Free |  | 20% | 
| 6806 |  | Slag wool, rock wool and similar mineral wools; exfoliated vermiculite, expanded clays, foamed slag and similar expanded mineral materials; mixtures and articles of heat-insulating, sound-insulating or sound-absorbing mineral materials, other than those of heading 6811 or 6812, or of chapter 69: |  |  |  |  | 
| 6806.10.00 |  | Slag wool, rock wool and similar mineral wools (including intermixtures thereof), in bulk, sheets or rolls |  | 3.9% | Free (A,AU,BH,CA, CL,E,IL,J,JO, MA,MX,P,SG) | 30% | 
| 6806.10.00 | 10 | Accoustical pads and boards | m2 |  |  |  | 
| 6806.10.00 | 20 | Other: |  |  |  |  | 
| 6806.10.00 | 20 | Batts, not exceeding 61 cm in width | m2 |  |  |  | 
| 6806.10.00 | 40 | Batts, exceeding 61 cm in width | m2 |  |  |  | 
| 6806.10.00 | 90 | Other | X |  |  |  | 
| 6806.20.00 | 00 | Exfoliated vermiculite, expanded clays, foamed slag and similar expanded mineral materials (including intermixtures thereof) | kg | Free |  | 30% | 
| 6806.90.00 |  | Other |  | Free |  | 30% | 
| 6806.90.00 | 10 | Accoustical pads and boards | m2 |  |  |  | 
| 6806.90.00 | 20 | Other: |  |  |  |  | 
| 6806.90.00 | 20 | Of molded calcium silicate | X |  |  |  |