Beijing Human Information Technology Co., Ltd. is a professional OEM manufacturer of PDH multiplexer, protocol converter, optical modem and chassis etc. They are of high quality and stability. Customer satisfaction and perfect service is what we are going for.
Our products are under strict Q.C and have been certified by ISO9001( 2000) , quality can be confirmed which helps us win good reputation.
Any specification, please feel free to contact us. We may produce the products for you.