| Classification of Products (CZ-CPA_2015) - level 6 - Sub-category |
231911 |
Glass in the mass, in balls (except microspheres), rods or tubes, unworked |
| Classification of Products (CZ-CPA_2025) - level 6 - Sub-category |
231511 |
Glass in the mass, in balls (except microspheres), rods or tubes, unworked |
| Harmonised Commodity Description and Coding System (HS) - level 4 - Article |
700231 |
Tubes of fused quartz or other fused silica, unworked |
| Standard International Trade Classification (SITC) - level 5 - Basic Heading |
66412 |
Glass in balls(other than microspheres of 66593),rods,tubes,unworked |