1. Working voltage: AC 220V±5% 2. Vacuum saturation,vacuum water-saturated and saturated time are to be set freely (vacuum saturated time and vacuum water-saturated time adjust range:0-16 hours, atmospheric water-saturated time adjustment range: 0-28 hours) 3. Vacuum degree:100-200Pa 4. Stainless steel for whole structure; organic material for saturation container, transparent and with good tightness. 5. Water admission, drainage, air admission and evacuation are performed automatically.