... widely applied in petroleum, chemical, mining, metallurgy, electric power, transportation, machinery manufacturing, railway etc. Features:1. Special ... working efficiency7. Efficient electric heating system, heating uniformity, less power consumption, safe, and reliable. 8. High quality filtering ... ≤100Gas content%≤ 0.1Cleanness ≤ NAS 6 gradePower supply 380V 50HZ 3Ph (As per user’soption)Working ...