Tianjin Hengguang Technologies Co., Ltd. (in china) is a professional manufacturer in fiber optic transmission area, providing optic transmitters and receiver, multiplexer such as: PCM, PDH, SDH, OPTIC/ETHERNET/VEDIO CONVERTOR(E1-10/100 Base_t, E1-V.35, E1-vedio, E1-RS232, 4E1-100Base_T, Media converter, 8E1-100Base_T, Fiber Ethernet Transceiver, Net Bridge, Fiber MODEM) ConverterTRXE1-10Base-T Communication Interface Converter E1/V35/RS232 Interface Converter OTS155E4 Interface Converter 4E1-100Base_T converter) ER4820B Intelligent High Frequency Switch Power.

Besides, we are one of the few manufactures that can make program which need both of the Substation Automation (SCADA) technology and optical transmission technology.

Also, we are looking for the distributors in the national market, hope we have chance to cooperate and please contact me if you have any interests.