据了解，镍基高温特种合金作为国家重点发展的战略性新材料，广泛应用于航空航天、能源电力、 石油化工等高端制造领域。吕城镇依托良好的产业基础和区位优势，经过多年深耕细作，已形成集研 发、生产、销售于一体的完整产业链，培育了一批具有核心竞争力的中小企业，产业集聚效应日益凸 显。 近日，江苏省工业和信息化厅公布2025年度江苏省中小企业特色产业集群名单，位于吕城镇的丹阳 市镍基高温特种合金材料产业集群成功入选。 此次获评省级特色产业集群，不仅是对吕城镇多年来专注特种合金领域的高度认可，更为当地产业 高质量发展注入强劲动能。吕城镇将以此次获评为契机，持续优化营商环境，强化科技创新支撑，推动 产业链向高端化、智能化、绿色化方向发展，努力打造国内领先的镍基高温特种合金产业高地，让"吕 城合金"品牌更加闪亮。（记者 佘记其 通讯员 姜旭 姜锁平） ...

Group 1 - The core viewpoint of the news is that Changyu Group has received approval for its IPO on the Shanghai Stock Exchange, marking it as the first IPO accepted in the main board for the year [1] - Changyu Group primarily engages in the research, production, and sales of zirconium products, specialty nylon products, and fine chemical products [1] - The company aims to raise approximately 700 million yuan, which will be invested in projects including 45,000 tons of ultra-pure oxygen zirconium chloride and deep processing, 10,000 tons of high-performance nylon elastomer products, and 1,000 tons of bioceramics and functional ceramics [1] Group 2 - From 2022 to 2024, Changyu Group's revenue is projected to be approximately 1.669 billion yuan, 1.607 billion yuan, and 1.637 billion yuan, with corresponding net profits of about 257 million yuan, 188 million yuan, and 205 million yuan [4] - The company experienced a decline in both revenue and net profit in 2023, with a slight recovery expected in 2024, although not returning to 2022 levels [4] - The zirconium products segment is the core business, contributing significantly to the company's revenue, with sales of zirconium products accounting for 76.17%, 72.43%, and 70.85% of the main business revenue from 2022 to 2024 [4] Group 3 - The gross margin of zirconium products has been declining and remains below the average level of comparable companies, with gross margins of 30.65%, 23.05%, and 22.41% from 2022 to 2024 [5] - The average selling price of zirconium products has also decreased, with prices of approximately 24,000 yuan/ton, 20,200 yuan/ton, and 18,000 yuan/ton during the same period [5] - The company's R&D expense ratio is consistently lower than that of comparable companies, with rates of 3.39%, 3.19%, and 3.3% from 2022 to 2024 [5] Group 4 - As of the signing date of the prospectus, Liu Qiyong directly holds 38.9% of Changyu Group's shares, while Liu Ce holds 9.36% directly, with both controlling a total of 53.2% of the company's shares [6]