We are an ISO9001 certificated and UL insulation certificated manufacturer for troidal & EI transformer, current transformer, PCB mount encapsulated transformers. 70 percents of our products are for high end audio and instruments(testers) use. We have two factories located in Taiwan and China(Gwangdong). We can offer you high quality and price competitive products. Please kindly send us your inquiry such as drawing and sample, we can offer you price and counter sample upon your request. Customized are most welcomed. 
Taiwan