Shijiazhuang Tonghe Electronics Co.,Ltd. (Hereafter referred to as Tonghe) is a high technology enterprise, which specializes in high frequency switching power supply and related products. Tonghe, as high tech and software enterprise, is approved by government and provides comprehensive and competitive power solutions for customers, which is highlighted in national power grid construction and renovation projects. As the ISO9001 and ISO14001 certified manufacturer since 1998, we focus on ...