Core Points - The company, Jiao Da Si Nuo, announced that its chairman, Li Wei, has been placed under detention by the Tianjin Binhai New Area Supervisory Committee, which affects his ability to perform his duties [1] - In response, the board of directors appointed Zhang Min, a director and deputy general manager, to temporarily assume the responsibilities of the chairman and legal representative until Li Wei can resume his duties or a new chairman is elected [1] - The company maintains that its governance structure and internal control mechanisms are sound, and daily operations are being managed normally by the executive team [1] Company Background - Jiao Da Si Nuo was listed on the ChiNext board on July 17, 2020, with a public offering of no more than 21.7334 million shares at a price of 28.69 yuan per share [2] - The total funds raised from the IPO amounted to 623.53 million yuan, with a net amount of 532.86 million yuan allocated for various projects including product upgrades and laboratory construction [2] - The underwriting fees for the IPO were 90.67 million yuan, with Guosen Securities receiving a total of 58 million yuan for underwriting and sponsorship services [2]