Shenzhen Yuan hengcheng Technology Co,.Ltd , is an officially registered and approved large-scale resource-based enterprise, focus on research and design, producing, processing, QC . Main products cover toroidal transformer, EI transformer , control transformer , power transformer , isolation transformer , three phase transformer , inductor etc .Shenzhen Yuan hengcheng Technology Co,.Ltd has established cooperation with lots of enterprises, rely on our strength , reasonable price, excellent service, ove 10 years rich experience in R&D and producing. Products are popular at home and abroad .