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Hi everyone, this is the only KZbin channel of [Chengyang Electrical Circuit] ~ I am an ordinary electrician in Qingdao, Shandong Province. I have been engaged in 18 years of maintenance and installation of factories, equipment, families and various circuits to share knowledge of electricity consumption, maintenance process, various circuit maintenance example videos like my videos can be subscribed to oh ~ / @user-yg5yt2ni3x maintenance# vlog# circuit# repair# knowledge# encyclopedia factory repair has not been repaired for two days, this bending machine is so difficult to repair? Measure the voltage for a few minutes! Chengyang Electrical Circuit]