Core Viewpoint - The sudden resignation of Zhao Ziyang, the secretary of the board of directors of Shandong Ruifeng High Polymer Materials Co., Ltd., has raised concerns, potentially linked to his investigation for insider trading two months prior [1][3]. Company Overview - Shandong Ruifeng High Polymer Materials Co., Ltd. was established in 1994 and specializes in the research, production, and sales of PVC additives and engineering plastic additives, headquartered in Yiyuan County, Zibo City, Shandong Province. The company was listed on the Shenzhen Stock Exchange's Growth Enterprise Market in July 2011 [3]. Recent Developments - Zhao Ziyang, who has been with the company since 2009 in various roles, was re-elected as the secretary of the board in December 2024 after a board and supervisory committee reshuffle. However, he was investigated for insider trading by the China Securities Regulatory Commission (CSRC) on June 10, 2024, which the company stated was a personal investigation unrelated to its daily operations [3][4]. Financial Performance - The company's financial performance has shown significant volatility in recent years, with revenues of 1.832 billion yuan, 1.776 billion yuan, and 2.001 billion yuan for 2022, 2023, and 2024 respectively, reflecting year-on-year changes of -1.45%, -3.04%, and 12.66% [4]. - The net profit attributable to shareholders was 61.14 million yuan, 85.29 million yuan, and 22.08 million yuan for the same years, with year-on-year changes of -34.17%, 39.51%, and -74.12% [4]. Stock Price Movement - The company's stock price has experienced significant fluctuations, reaching a low of 4.97 yuan per share in February 2024, peaking at 16.06 yuan per share on May 9, 2024, before dropping to a low of 6.97 yuan per share on September 18, 2024. The stock then rebounded, reaching a high of 14.46 yuan per share on November 6, 2024 [5].

山东瑞丰高分子材料股份有限公司（以下简称"公司"）董事会近日收到公 司董事会秘书赵子阳先生提交的书面辞职报告。赵子阳先生因个人原因申请辞去 公司董事会秘书职务，辞职后将继续在公司担任其他管理职务，并继续在控股子 公司山东瑞丰玥能新材料有限公司担任董事、副总经理职务。根据《深圳证券交 易所上市公司自律监管指引第 2 号——创业板上市公司规范运作》和《公司章程》 等相关规定，赵子阳先生的辞职报告自送达公司董事会之日起生效。赵子阳先生 担任董事会秘书的原定任期至公司第六届董事会届满之日止。 截至本公告日，赵子阳先生持有公司股份 219,920 股，占公司总股本的 《深圳证券交易所上市公司自律监管指引第 18 号—— 证券代码：300243 证券简称：瑞丰高材 公告编号：2025-036 债券代码：123126 债券简称：瑞丰转债 山东瑞丰高分子材料股份有限公司 本公司及董事会全体成员保证信息披露的内容真实、准确、完整，没有 虚假记载、误导性陈述或重大遗漏。 根据《深圳证券交易所创业板股票上市规则》等有关规定，为保证公司信息 披露等工作正常进行，在公司董事会秘书空缺期间，暂由董事长周仕斌先生代行 董事会秘书职责。周仕 ...

（文章来源：每日经济新闻） 瑞丰高材（SZ 300243，收盘价：10.93元）8月4日晚间发布公告称，赵子阳先生因个人原因申请辞去公 司董事会秘书职务，辞职后将继续在公司担任其他管理职务，并继续在控股子公司山东瑞丰玥能新材料 有限公司担任董事、副总经理职务。 2024年1至12月份，瑞丰高材的营业收入构成为：PVC助剂行业占比94.35%，工程塑料助剂行业占比 5.33%，其他占比0.31%。 ...

本公司及董事会全体成员保证信息披露的内容真实、准确、完整，没有 虚假记载、误导性陈述或重大遗漏。 山东瑞丰高分子材料股份有限公司（以下简称"公司"）董事会近日收到公 司董事会秘书赵子阳先生提交的书面辞职报告。赵子阳先生因个人原因申请辞去 公司董事会秘书职务，辞职后将继续在公司担任其他管理职务，并继续在控股子 公司山东瑞丰玥能新材料有限公司担任董事、副总经理职务。根据《深圳证券交 易所上市公司自律监管指引第 2 号——创业板上市公司规范运作》和《公司章程》 等相关规定，赵子阳先生的辞职报告自送达公司董事会之日起生效。赵子阳先生 担任董事会秘书的原定任期至公司第六届董事会届满之日止。 | 证券代码：300243 | 证券简称：瑞丰高材 公告编号：2025-036 | | --- | --- | | 债券代码：123126 | 债券简称：瑞丰转债 | 山东瑞丰高分子材料股份有限公司 关于公司高级管理人员辞职的公告 特此公告。 山东瑞丰高分子材料股份有限公司董事会 2025 年 8 月 5 日 截至本公告日，赵子阳先生持有公司股份 219,920 股，占公司总股本的 0.0878%。赵子阳先生将继续严格遵守《上市公司 ...

Group 1 - The company is actively advancing the construction of a ton-level pilot test facility for black phosphorus [1] - The company is also engaging with downstream application partners in various fields, including new energy and flame retardants [1] - Further business progress will be disclosed in the company's relevant announcements [1]

Group 1 - The company, Ruifeng High Materials, expects to complete the technical transformation of the PETG project in the third quarter of this year [2] - After the completion of the technical transformation, the facility will be capable of producing biodegradable materials PBAT, polyester materials PETG, and PBT simultaneously [2]

Group 1 - The company is actively advancing the construction of a ton-level pilot test facility for black phosphorus, which is a key material for solid-state battery localization [2] - The company is also engaging with downstream application partners across various fields, including new energy and flame retardants [2] - Investors are encouraged to monitor the company's announcements for specific business progress updates [2]

Group 1 - The company has successfully stabilized its 100-kilogram black phosphorus pilot production facility, producing black phosphorus materials that meet quality requirements [2] - The company is currently constructing a ton-level pilot production facility to further scale up black phosphorus production [2] - The company is actively engaging with downstream application partners as it expands its black phosphorus production capabilities [2]

Core Viewpoint - The company is actively working on the construction of its black phosphorus production line, with expectations to complete the pilot plant by the third quarter of this year [2]. Group 1 - The company's subsidiary, Ruifeng Yuanneng, is responsible for the construction of the ton-level pilot facility [2]. - The completion of the black phosphorus production line is anticipated in the third quarter of this year [2]. - The company has received inquiries regarding the differences between its black phosphorus production setup and those of competitors [2].

本公司及董事会全体成员保证信息披露的内容真实、准确、完整，没有 虚假记载、误导性陈述或重大遗漏。 一、基本情况 近日，山东省工业和信息化厅官网发布了《关于公布 2025 年山东省先进级 （省级）智能工厂、智能制造优秀场景名单的通知》（鲁工信装〔2025〕116 号）， 为落实工信部等六部门《智能工厂梯度培育行动实施方案》和省政府《关于推动 传统产业优化升级培育发展新质生产力的实施方案》有关要求，分层分级系统性、 规模化推进山东省智能工厂培育建设，山东省工信厅开展了 2025 年山东省先进 级（省级）智能工厂、智能制造优秀场景评定工作。经企业申报、地市推荐、专 家评审、社会公示等程序，确定了先进级（省级）智能工厂、省级智能制造优秀 场景名单。根据《名单》，山东瑞丰高分子材料股份有限公司（以下简称"公司"） 被认定为"山东省先进级（省级）智能工厂"。 | 证券代码：300243 | 证券简称：瑞丰高材 公告编号：2025-035 | | --- | --- | | 债券代码：123126 | 债券简称：瑞丰转债 | 山东瑞丰高分子材料股份有限公司 关于荣获省级智能工厂的公告 本次认定结果，是对公司智能化改造成果的 ...