Defect: Treatment craft is troublesome, cost is too high.
4. Inferior the watch sticks plan: One kind be simple tube plan actually is improved, still be in now perfect in.
Advantage: Showing colour consistency, the first index such as the perspective and mark stick plan difference not big, but cost is inferior, indication effect is very good, resolution is theoretic can accomplish 17200 above.
Defect: Treatment is more sophisticated still, refuse electrostatic demand tall.
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