Yangtze Optical Electronic Co., Ltd. (YOEC) is located in Optics Valley of China, which is near East Lake. It is a high-tech enterprise with optoelectronic technology as its core. It is mainly engaged in products research, development, production and sales in five fields, such as special optical fiber and cable, special optical devices, new materials, high-end equipment and photoelectric systems, and provides customers with measurement calibration and testing services for optoelectronic first-class metering stations.