This model is customized for the industrial oil of metal cutting processing, water vacuum, metal chips, cutting oil & fluids including the auto-stop system when in to p level. No pollution caused by spitting from motor when it is in full level of liquid, extending motor’s life-span. Cutting fluids can be exhausted vacuuming automatically and need not be poured out by man in recycling, easy-cleaning in economical of work force. Adapted by high pressure fan, the suction is powerful in vacuum instead of in sufficient fan in common. It is by far the best electricity-saving and durability comparing to the traditional ones. Multiply-filter is more safety than vacuums in the past. Equipped with protection system of over-loading ensures more safety use.