transformer power transformer oil-immersed transformer CE certificate widely exported to Russia, Ukraine, Poland, UK. Italy, transformer power transformeroil-immersed transformerCE certificatewidely exported to Russia, Ukraine, Poland, UK. Italy, etc. Shanghai CET Group have 7 branches in China to produce:Circuit breaker: mcb, rccb, mccb, rcbo.AC contactor: LC1-D, GMC, CJ40, KT6023Fuse: NT00C/ ...