What is the difference between PTC heating and straight tube heating of footbath?

PTC heating method of footbath is not easy to damage, long service life, and high safety factor, now many famous brand footbath are using this heating method, straight tube heating is easy to damage, short service life, now has been gradually replaced by the PTC, want to know more about the footbath information please visit the top ten brands of footbath ranking website www.zuyupen66.com It introduces a lot of information about the foot bath tub, including the role of the foot bath tub, function and foot bath foot massage and other health care knowledge, I hope this answer can bring you help!