Henan SanyuanNetwork Science & Technology Co., Ltd. is a professional surge protection device (SPD) company. We are mainly dealing in surge production devices, designing and constructing the various lightning protection projects. The lightning protection engineering involves in the fields of communications, financial areas, securities, banks and so on. We have a sophisticated construction team with rich experience. We also deal in the information security production and the network storage equipment. We are a comprehensive high-tech company that has integrated research and development, production, marking and services. we are ISO9001:2008 certified company, from 2007 to now,we always supply serves for China Telecom the top brand of telecom industry.