About GRT Founded in April, 2008 and headquartered in Zhongguancun High-tech Park in Beijing, Beijing Guang Run Tong Technology Development Co.,Ltd(GRT ) is an high-tech enterprise with strong strength of R&D, manufacture and marketing, independent intellectual property and self-owned brand.

GRT has a professional R&D team specialized in optical communication industry. They are experts from network connection, data transmission, optical communication, interface conversion manufacturers, with over 15 years' avarage R&D experience in communication products.

GRT has always been dedicated for the core technology research of fiber optical industry.

We've built cooperation with many colleages and universities,scientific research institutions to meet the market demands and requirements, thus making our products' technology and performance among the leading position in the industry.