Main Technical Parameters; 1. Steel pob txoj kab uas hla: 19mm; 2. Steel pob ntog qhov siab 1000mm; 3. Laser precision xeem, raug 1us; 4. Voltage: 220V, 50HZ. Configuration List: 1.Host–1 Set 2.Electronic timer-2 teev 3.Chrome steel ntog pob-2 pcs 4.Concrete block: 75 * 75 * 50mm-1 pcs