Sheng Tung Development Co., Ltd. (STE) is a well-established and experienced firm in the AC-DC supply, DC-DC converter and transformer industries. There are a series of models for the various applications, like linear adaptor-EI28, EI35. . . , Switching adaptor-NSP-12, 18. . . Which are widely used in tele-com, industry and 3C. All new designs of power supply (OEM / ODM) by customer's request are welcome as well. The way we serve our customer is to offer our best efforts which are very good quality, competitive prices, and best delivery date. Of course, the products must comply with certification of CSA, UL, TUV, CE, CB, SAA. . . . . . Etc. With the full satisfication of sales performance in domestic and international market, we are willing to extend our business to cooporate, serve and satisfy more and more clients For further questions, please feel free to contact us immediately.