... 3.certificate:CE,ISO JBK5 series Transformers / Power Transformer / Toroidal Transformer ·JBK5 series transformer used in machine control exchange 50-60hz, input voltage ... ,Shanghai Qipier Electric Manufaturing Co.,Ltd,which specializes in producing Transformer,Circuit Breakers,Voltage Regulators,Switching Power Supply,Surge Protectors,Electrical ...