| graphics | Checkerboard |
| Graphics parameters | 25mm x 25mm, 16 frames each |
| Glass size | 250mm x 100mm |
| Execution standards | GB/T1726 |
Warranty days: 365 days
1. For product quality problems caused by non-human products of instruments and equipment, the manufacturer will provide free warranty services during the warranty period;
2. There is no warranty period for fragile and consumable parts, and if you find product quality problems after receiving the goods, please apply for return and exchange within 7 days, and you will not wait for the overdue ones;