On the evening of May 20, the Shanghai stock exchange accepted the IPO application of science and Innovation Board of Jiaxing Zhongrun Optical Technology Co., Ltd. and Shenzhen AVIC bit Communication Technology Co., Ltd. the two companies planned to raise funds of 405 million yuan and 1.505 billion yuan respectively. According to the prospectus, Zhongrun optics is a precision optical lens product and technology development service provider with vision as the core, mainly engaged in the R & D, production and sales of optical lenses and providing relevant technology development services. Bit technology is a high-tech enterprise focusing on the field of military communication. Facing the infrastructure needs of networking, intelligence, localization and security in the military industry, it is committed to the R & D, production and sales of military communication equipment.