August 11th, Wang Li, researcher of Ministry of Science and Technology came to Qinghai Zhongli to do research on materials. He visited the company accompanied by Zhang Chaoyuan, deputy director of provincial Technology Gallery. General manager of Qinghai Zhongli, Yu Weichangaccompanied entirely.First, Mr. Yu introduced the basic situation of Qinghai to them and then showed the optical fiber preform and the optical fiber drawing production line. They saw the real fiber products in the plants and it brought back high praise from the researchers about the development prospects of Qinghai Zhongli. All the researchers were satisfied with the research results.