Birthplace of China's optical fiber pursues innovation, self-reliance

Optical Fiber Coloring Rewinding Machine The diameter of one optical fiber is slightly thicker than that of a human hair, but it can carry several million calls simultaneously. Nearly 70 percent of the world's optical fibers are produced in central China's Wuhan where the country's first strand was drawn here some 40 years ago.

Birthplace of China's optical fiber pursues innovation, self-reliance - CGTN