- Surface coating wear: Reduced smoothness and increased pen drag after long-term stylus friction;
- Micro scratches: Dense fine scratches on glass surface affecting visual experience;
- Local touch attenuation: Reduced sensitivity in frequently used central drawing area.
- Standard grade: 9H scratch-resistant glass, suitable for daily light drawing users;
- Premium grade: Matte anti-glare glass with paper-like touch, ideal for professional drawing users;
- Pro grade: Original-equivalent coating, ultra-low friction, for high-end professional studios.
- Recommend 60% premium grade + 30% standard grade + 10% pro grade for European and American markets;
- All products are pre-tested for continuous stylus sliding to ensure stable touch smoothness;
- Support mixed batch procurement of different grades to match different customer groups.