What is the reason why Han An Technology withdrew from IPO?

As the first batch of science and technology enterprises accepted, Han An Science and Technology entered the "examination room" of science and technology innovation board on March 22nd. In the critical period of IPO, Chongqing Jinshan Medical Equipment Co., Ltd. and Chongqing Jinshan Technology Co., Ltd. (hereinafter referred to as Chongqing Jinshan) launched a "patent artillery fire" against Han An Science and Technology, suing Han An Science and Technology for its "magnetically controlled capsule gastroscope system" products for infringing eight patent intellectual property rights, and this year it was 1 1. China National Intellectual Property Administration declared that six patents of Chongqing Jinshan were "all invalid" and became worthless waste paper. The listing process of Han An Science and Technology was repeatedly blocked by "pseudo-patent litigation".