Changchun Kehuan Zhikong Electric Co., Ltd. is a transformer accessories enterprise integrating R&D, manufacturing, sales and service. The main products of the company are transformer oil pump, transformer fan, blower, on-load tap-changer online oil purifier, transformer terminal cabinet, transformer air cooling control cabinet and other transformer components. ■ Main products of production and management: 1) Transformer fan 2) Transformer oil pump 3) On-load switch on-line oil filter device 4) Air-cooled control cabinet, terminal box 5) Pressure relief valve, gas relay, valve 6) Oil flow relay, oil flow indicator, oil level gauge