... 1.environmental protection. 2.easy handle. 3.work 24h continuously. WH-VI-40KW high frequency induction quenching machine ModelWH-VI-40Worker ... pliers, knives, scissors, axes, hammers and other hand tools quenching WH-VI-40Output power: 40KWWorking voltage range(AC):Three-phrase four ... to our factory for visitation,we are waiting for you!! WH-VI-40KW high frequency induction quenching machine