If the PTC heater is used to heat the liquid (eg: water), it will not be destroyed when the liquid is burnt to be dry.

• 当PTC发热体用来加热液体（如水）时，液体烧干后，PTC发热体不会损坏，具有长期的电热稳定性，通电不会发红，着火，不耗氧，无火灾危险。