2. Pneumatic and stable, uniform pressure, nice pressing and high efficiency.
3. Air bag: air bag structure, completely sealed and wedged to squeeze the sole during operation.
4. Bottom bracket mechanism: The bottom bracket structure which position is adjustable according to the size of the products.
5. Simple operation: High automation and easy operation, shortening the learning time you spend.
6. High quality and reliability, long service life, energy saving and environmental protection.