1.CE,CB and ISO9001 certificates 2.20 years manufacture experience 3.fast delivery time with good price. 1. Application (JBK3(DK3)machine tool control transformer) JBK3 series machine tool control transformer is a kind of new product by reference to sample of SIMENS Company, it accords with standards like VDE0550, IEC204-1, IEC439, GB5226, etc. It is suitable for AC circuit of 50 ~ 60Hz, output ...