| Execution standards | GB/T 1728-89 |
| Nominal Mass | 200±0.2g |
| Weight base area | Weight base area |
| Specimen size | 50*120*(0.2~0.3)mm |
This product is a consumable product and there is no warranty period. If there is a quality problem after receiving the goods, the customer can take photos in time to apply for return and exchange. For the definition of return and exchange, please refer to the mall return and exchange guidelines.