Beijing Human Information Technology Co.,Ltd.(HUMANITY), certified by ISO9001:2000, is a professional manufacturer on telecom products since 2002. HUMANITY products are with powerful advantages in data communication, optical communication and integrated circuit design. They are widely used in telecom, Mobile Communications, electric power, Unicom and monitoring etc. We independently research and develop various protocol converters, optical modem, PDH multiplexer and video multiplexer, balun etc. The customer first, stable performance, technology advantage and nice appearance helps us win good reputation at home and abroad.