Yijia Electronics (Shanghai) Co., Ltd. was established in 2002. It is a professional transformer manufacturer integrating R&D, production and sales. Mainly develop, produce and design custom-made: high and low frequency transformer, inductance coil, filter, adapter, ring transformer, and professional agent of JAC high precision control card made in Taiwan. Products are widely used in switching power supply, computer products, audio systems, household appliances, industrial equipment, medical equipment, RO adapters, industrial control cards... And so on.