| 出生地 |
Jilin China (Mainland) |
| 牌子的名字 |
JO |
| 模式的数量 |
JO-DG |
Diffraction Gratings Holographic - Photo Ruled - Cut Eschell : 100 Lines or Less Advantages: Reproduction in Accuracy and Surface Quality Cost-effective Light-weight Environmental Resistant High volume capacity Tolerances - ± 0.5 mm