Feature of the main machine：
1. The full machine is manufactured to high standard, reasonable and safety constitution. Easy operation and quick order change.
2. Adopt high quality material and element.
3. All driving gears are surface ground and hardened , hardness＞60o.
4. Automatic zero returning and automatic reset.
5. Vacuum transmission during the printing process.
6. Mechanical expanding connection (easy assembled and disassembled) takes place of key  connection,      eliminate abrasion of the center part on the drivers and keep the accurate register.
7. All the rollers are chrome-plated and hardened.

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