| 690310 |
Containing by weight more than 50 % of graphite or other carbon or of a mixture of these products |
ES |
| 69031010 |
Crucibles and covers therefor |
I |
| 6903109 |
Other |
|
| 69031091 |
Containing by weight 85% or more of graphite or other forms of carbon |
I |
| 69031099 |
Other |
I |
| 690320 |
Containing by weight more than 50% of alumina (Al2O3) or of a mixture or compound of alumina and of silica (SiO2) |
ES |
| 69032020 |
Crucibles and covers therefor |
I |
| 69032090 |
Other |
I |
| 690390 |
Other |
ES |
| 69039020 |
Crucibles and covers therefor |
I |
| 69039090 |
Other |
I |