Shenzhen Ka-shing is joint industry of professional China CWDM / DWDM Manufacturers and CWDM / DWDM factory, ferrules, splitters, optical fiber jumper production. We are the basic manufacturer of communication accessories in the field of optical communication. It includes optical fiber connectors, Wholesale CWDM / DWDM, wavelength division multiplexers, optical attenuators and optical isolator, etc., which are the joints of CWDM / DWDM for sale. Optical connectors are the widely used and the numerous devices in optical passive devices, followed by couplers and wavelength division multiplexers, and other devices are used less. With the development of optical communication technologies, the demand for dense optical wavelength division multiplexers and large port number matrix optical switches will gradually.