| HS Codes | Unit Code | Unit | Descriptions in Chinese | Descriptions in English |
|---|---|---|---|---|
| 70021000 | 9 | 千克 | 未加工的玻璃球 | Balls, glass exc microspheres of No 70.18 |
| 70022010 | 9 | 千克 | 光导纤维预制棒 | Preformed glass bars for drawing optical fibre |
| 70022090 | 9 | 千克 | 其他未加工的玻璃棒 | Other glass rods |
| 70023110 | 9 | 千克 | 熔融石英等熔融硅石制未加工光纤用波导级管 | Tubes of fused quartz, of waveguide-level, for optical fibre use |
| 70023190 | 9 | 千克 | 熔融石英等熔融硅石制其他未加工玻璃管 | Tubes of fused quartz or other fused silica, nes |
| 70023200 | 9 | 千克 | 其他未加工的耐热玻璃管 | Tubes of glass linear coef of exp≤5 X 10-6 per Kelvin withn 0C-300C |
| 70023900 | 9 | 千克 | 未列名未加工的玻璃管 | Tubes of glass nes |
