On the news that the quantum communication products of optical library technology have been supplied to the market in large quantities, on the evening of the 19th, the optical library technology said that the rumor was not true. The quantum communication field was not the company’s main business scope and future development direction, and the proportion of related products was very low. < p > < p > on the 19th, the concept of quantum communication went against the market and rose sharply. Among them, the limit of optical library technology closed at RMB 57.92 per share, with a total market value of RMB 5.308 billion. < / P > < p > an investor asked on the interactive platform of Shenzhen stock exchange that your company’s stock price is up and down today. It is said that the company’s quantum communication products have been supplied to the market in large quantities! Is it true? In this regard, optical library technology said that the rumor was not true. The company’s main products are optical fiber laser devices and optical communication devices. The company’s wavelength division multiplexer and other general-purpose optical fiber device products can be applied to optical communication fields including quantum communication. However, the quantum communication field is not the company’s main business scope and future development direction. The proportion of related products is extremely low, and almost no business income and profit is generated. In response, optical library technology also reminded investors to be cautious about the logic and concept of market hot spots, make rational judgments, invest prudently, prevent and avoid hype of concept themes, and pay attention to investment risks. The company was founded in 2000 and its leading products include high-power optical passive devices, polarization maintaining passive devices, various fiber lasers and core modules of optical network, fiber micro connectors, etc. the products are widely used in fiber laser, optical fiber communication, aerospace, sensor detection and environmental monitoring Geological exploration, medical equipment and other important fields. In terms of performance, guangku technology released the third quarter report on the evening of October 12. In the first three quarters, the net profit attributable to the owners of the parent company was 43.7519 million yuan, a year-on-year decrease of 9.87%; the operating income was 346 million yuan, a year-on-year increase of 24.5%; the basic earnings per share was 0.4839 yuan, a year-on-year decrease of 10.92%. For the reasons of performance change, optical library technology explained in the announcement that during the reporting period, the company’s operating income increased by 24.50% year-on-year, while the net profit attributable to the shareholders of the listed company decreased by 9.87% year-on-year. This is mainly due to the impact of the new epidemic situation and the production commissioning period in Milan optical Library in the reporting period, resulting in a loss of 18.6166 million yuan from January to September 2020. If excluding the influence of Milan optical library, the net profit attributable to shareholders of listed companies during the reporting period was 60.71 million yuan, an increase of 23.62% over the same period of last year. < / P > < p > Disclaimer: the purpose of this article reprinted by china.com finance and economics is to convey more information and does not represent the views and positions of the website. The content of this paper is for reference only and does not constitute investment advice. Investors operate accordingly and bear their own risks. < p > < p > Chinanet is a national key news website under the leadership of the Information Office of the State Council and managed by China foreign language publishing and Distribution Bureau. Through 11 versions in 10 languages, the website releases information 24 hours a day, which is an important window for China to carry out international communication and information exchange.