| Performance parameters | standard value |
| size | 432×165×0.25mm |
| Gloss (60 °) | < 10 (measured value: 6 +/- 0.5) |
| Reflectance | < 4% (measured value: 3 +/- 0.5) |
| Film thickness | 0.25±0.02mm |
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;