FETURE: 1. Using air cylinder to open/close the cover, it can make work easier and more efficient 2. Laser device to avoid unloaded operationTECHNICAL DATA: Voltage:220V, 50HZ Compressing time: 2-99s Gas pressure of compression: 0.2-0.7 mpa Efficiency :170 pairs/hour Weight: 160 kg Mechanical dimension: 750x400x1200 mm