... and heat preservation of various cabinet and case. Such as, switch cabinet, communication cabinet, lighting cabinet, anti-Gel boxes, ... nickel-chromium alloy wire, heat block, thermal efficiency, long service life.B.Heater moisture of silicone rubber with the E- ... of electric heater to improve and prolong its useful life.D. Easy installation. Silicone Heater,heating speed,long life, quality assurance