Single Mode Fiber, Smf Fiber, Bend Insensitive Fiber Supplier - CDSEI

CDSEI is a Sino-Japanese joint venture focusing on optical fiber manufacturing. With advanced modern management and continuously technical and equipment support from its shareholder, Sumitomo Electric Industries (SEI), CDSEI has attained the world-leading level in fiber manufacturing and keeps the advanced technology with SEI in sync.

As one of the earliest companies dedicating in optical fiber manufacturing in China, CDSEI has more than 32 years high-quality communication optical fiber manufacturing experience from 1992. High-quality fibers from CDSEI have been widely and stably used in China and around the world.

To be the Global High-quality Optical Fibers Manufacturer and ensuring product quality and user satisfaction is the unremitting pursuit of CDSEI.