Silicon
Density：2.329g/cm^3
Transmission：＞52%
Resistivity：0-10000Ω/cm
Conductivity type：N-type or P-type
| Size | Range of sizes | Perpendicular | Roughness(μm) | Angle tolerance | Parallelism |
| Small | 5×5-10×10mm | 1′ | 1.6 | 2″-60″ | 3′-5′ |
| Medium | 20×20-50×50mm | 1′ | 1.6 | 2″-60″ | 3′-5′ |
| Large | 60×60-100×100mm | 1′ | 1.6 | 2″-60″ | 3′-5′ |
