Electronic voltage regulation and constant temperature heating: electronic temperature control and intelligent temperature control to achieve constant temperature heating. Liner and alkali-free glass fiber: alkali-free glass fiber is used as the insulating material, Cr20Ni80 alloy wire spring is placed in it, and aluminum silicate wool is vacuum-formed, which has the characteristics of high temperature resistance and fast heating. Insulation shell: one-time pressure molding, electrostatic spraying process can make the overall heating area reach more than 60%. Heating sleeve core: fast heating and good insulation effect. After-sales service: If there is any problem with our product, please contact us in time, we will reply you within 24 hours.