... expensive tubes;4.special security, no pressure, eliminating the high risk of electric shock;5.high reliability: modular, integrated, high ... installation : just connect the power and water, and 10 minutes to complete.;7.easy operation :a few minutes to learn. ... gauge, the temper of pontil, the hardening of surface for high tensile screw, epoxy powder coating for locking nut etc. low price of induction ...