NRAO and the Shanghai Astronomical Observatory (SHAO) are organizing the fourth in a series of China-U.S. radio astronomy workshops, titled "Scientific and Technical Drivers for the Next Generation of Radio Telescopes." The workshop will be held at SHAO in Shanghai from October 14-16, 2015. The purpose of the workshop is to build and strengthen collaborations between the U.S. and Chinese radio astronomy communities. It will include discussions on both science and instrumentation, with a focus on projects and programs that will feed into the next generation of radio astronomy facilities, such as FAST and ngVLA, as well as future VLBI capabilities both in space and on the ground.