Group 1 - Changyu Group, established in 2019, is not a startup but has rapidly grown by absorbing existing assets and teams from its actual controller Liu Qiyong, with over 90% of its revenue and profit coming from acquired subsidiaries [2][4] - The company plans to go public on December 19, 2025, and has a leading global position in zirconium products, with an annual production capacity of 75,000 tons of oxychloride zirconium [4][7] - The main customers, including the first rare element, purchase products at a premium of 34.4% above market prices, raising concerns about the fairness of these transactions [9][10] Group 2 - The historical administrative penalties and debt disputes of Zibo Guangtong Chemical Co., the predecessor of Changyu Group, have been excluded from the listing framework, raising questions about transparency [3][5] - The prospectus fails to disclose the relationship between Liu Qiyong and key guarantor Che Xiufeng, which could be seen as a significant omission [12] - The management team largely consists of individuals from Zibo Guangtong, indicating that Changyu Group is not a newly established entity but rather a restructured version of an existing business [5][6] Group 3 - Changyu Group's revenue from its two main subsidiaries, Guangtong New Materials and Guangyin New Materials, accounted for 96.52% of total revenue in 2024, highlighting the dependency on these entities for financial performance [8] - The company has a low utilization rate of less than 50% for its nylon production capacity, yet it plans to raise funds for expansion, which raises questions about the rationale behind this decision [11] - The prospectus contains errors regarding the employment history of executives, which could indicate a lack of diligence in information disclosure [13]