Suotong Development Co., Ltd. convened its first interim shareholders' meeting and first employees' congress of 2026 on February 9, 2026, which elected the non-employee directors and employee director for the company's sixth board of directors. These individuals collectively form the sixth board of directors.

Regarding the appointment of senior management and securities affairs representatives: Following deliberation at the first meeting of the sixth board of directors, the following senior management appointments were made: President: Ms. Lang Jing Vice Presidents: Mr. Liu Rui, Mr. Fan Benyong, Mr. Yuan Gang, Mr. Huang He Chief Financial Officer: Ms. Zhang Xiawei Board Secretary: Mr. Cheng Jie

Mr. Cheng Jie was born in 1986, is a Chinese citizen with no permanent residency abroad, holds a postgraduate degree, and possesses qualifications as a sponsor representative, certified public accountant (non-practicing), and legal professional. He previously worked at Dongxing Securities Co., Ltd. and the investment banking department of China International Capital Corporation Limited (CICC). He joined the company in March 2025 and currently serves as the Board Secretary and General Manager of the Securities Department.

Stock Code: 603612 Stock Abbreviation: Suotong Development Announcement Number: 2026-009 Suotong Development (603612): Announcement Regarding Completion of Board Re-election and Appointment of Senior Management and Securities Affairs Representatives Suotong Development Co., Ltd. held its first interim shareholders' meeting and first employees' congress of 2026 on February 9, 2026, which elected the non-employee directors and employee director for the company's sixth board of directors. On the same day, the company convened the first meeting of the sixth board of directors, which elected the chairman and members of various special committees of the board, and appointed the new senior management team and securities affairs representative. The specific details are announced as follows:

I. Composition of the Sixth Board of Directors The sixth board consists of 9 directors, including 5 non-independent directors, 3 independent directors, and 1 employee representative director. Chairman: Mr. Lang Guanghui Other Non-independent Directors: Ms. Lang Jing, Mr. Liu Rui, Ms. Lang Shiyu, Mr. Fan Benyong Employee Representative Director: Ms. Zhang Yuanyuan Independent Directors: Ms. Zhang Hong, Mr. Sun Hao, Mr. Chen Ning The term for the above directors is three years, effective from the date of approval at this shareholders' meeting until the end of the term of the sixth board.

II. Composition of the Special Committees of the Sixth Board The sixth board has established a Strategy and ESG Committee, an Audit Committee, a Nomination Committee, and a Compensation and Evaluation Committee. Their compositions are as follows: Strategy and ESG Committee: Mr. Lang Guanghui (convener), Mr. Sun Hao, Ms. Lang Shiyu Nomination Committee: Mr. Chen Ning (convener), Ms. Zhang Hong, Ms. Lang Jing Audit Committee: Ms. Zhang Hong (convener), Mr. Sun Hao, Ms. Zhang Yuanyuan Compensation and Evaluation Committee: Mr. Sun Hao (convener), Mr. Chen Ning, Mr. Liu Rui The terms of the committee members commence from the date of approval at this board meeting until the end of the term of the sixth board.

III. Appointment of Senior Management and Securities Affairs Representative Following deliberation at the first meeting of the sixth board of directors, the following senior management appointments were made: President: Ms. Lang Jing Vice Presidents: Mr. Liu Rui, Mr. Fan Benyong, Mr. Yuan Gang, Mr. Huang He Chief Financial Officer: Ms. Zhang Xiawei Board Secretary: Mr. Cheng Jie The appointment of senior management has been reviewed and approved by the board's Nomination Committee, and the appointment of the CFO has been reviewed and approved by the board's Audit Committee. The Nomination Committee confirmed that the qualifications of the above individuals comply with relevant laws and regulations, and their educational background, professional capabilities, work experience, and professional ethics meet the requirements for their respective positions. There are no circumstances that would disqualify them from serving as senior management under the Company Law or the Shanghai Stock Exchange Listing Rules. Board Secretary Mr. Cheng Jie has obtained the required training certification from the Shanghai Stock Exchange for main board board secretaries. Following deliberation at the first meeting of the sixth board of directors, Ms. Liu Suning was appointed as the Securities Affairs Representative. The terms of the above senior management and securities affairs representative commence from the date of board approval until the end of the term of the sixth board. Resumes are provided in the attachment.

The company has completed the board re-election and appointment of senior management. The company expresses sincere gratitude to all members of the fifth board of directors and all senior management for their diligent work and contributions during their tenure.

This announcement is hereby issued.

The Board of Directors of Suotong Development Co., Ltd. February 10, 2026

Attachment: Resumes of Senior Management and Securities Affairs Representative

Ms. Lang Jing Born in 1975, Chinese citizen, no permanent residency abroad. Holds an Executive MBA and is an auditor. Previously worked as an auditor at Shanxi Zezhou County Audit Office. Joined the company in 2003, serving successively as Chief Accountant of Tianjin Suotong International Industry & Trade Co., Ltd., and as Financial Manager, CFO, Vice President, and President of the company. Currently serves as Director and President of the company. Ms. Lang holds 348,500 shares of the company, representing 0.07% of the total share capital. Ms. Lang is a close family member of the company's actual controller and current Chairman, Mr. Lang Guanghui. Apart from this, she has no relationship with other directors, senior management, or shareholders holding 5% or more. She meets all qualification requirements and has not been subject to any regulatory penalties or investigations in the past 36 months.

Mr. Liu Rui Born in 1965, Chinese citizen, no permanent residency abroad. Holds a bachelor's degree and is a professor-level senior engineer. Previously served as Engineer and Technology Section Chief at the Carbon Plant of Chalco Henan Branch. Joined the company in 2004, serving successively as Technology Department Manager, Engineering Department General Manager, Deputy General Manager of Shandong Production Center, and Vice President of the company. Currently serves as Director and Vice President. Mr. Liu holds 275,700 shares of the company, representing 0.06% of the total share capital. He has no relationship with other directors, senior management, the actual controller, or shareholders holding 5% or more. He meets all qualification requirements and has not been subject to any regulatory penalties or investigations in the past 36 months.

Mr. Fan Benyong Born in 1981, Chinese citizen, no permanent residency abroad. Graduated from University of Science and Technology Beijing with a master's degree in Materials Science in 2005; obtained an Executive MBA from Peking University in 2015. Joined the company in 2005, serving successively as Department Manager of Tianjin Langtong International Trading Co., Ltd., Deputy General Manager of Dezhou Langtong International Trade Co., Ltd., and Vice President of the company. Currently serves as Director, Vice President, General Manager of Beijing Suotong Xindongneng Technology Co., Ltd., Chairman of Foshan Xinyuan Electronics Co., Ltd., Director of Inner Mongolia Xinyuan Graphene Technology Co., Ltd., and Supervisor of Beijing Antaike Information Technology Co., Ltd. Mr. Fan holds 223,200 shares of the company, representing 0.04% of the total share capital. He has no relationship with other directors, senior management, the actual controller, or shareholders holding 5% or more. He meets all qualification requirements and has not been subject to any regulatory penalties or investigations in the past 36 months.

Mr. Yuan Gang Born in 1981, Chinese citizen, no permanent residency abroad. Graduated from Peking University with a master's degree in Law (Tax Law) in 2007, holds legal professional qualification and board secretary qualification. Previously worked at Sinopec. Joined the company in September 2017, serving successively as Board Secretary, and Vice President & Board Secretary of the company. Currently serves as Vice President of the company. Mr. Yuan holds 194,500 shares of the company, representing 0.04% of the total share capital. He has no relationship with other directors, senior management, the actual controller, or shareholders holding 5% or more. He meets all qualification requirements and has not been subject to any regulatory penalties or investigations in the past 36 months.

Mr. Huang He Born in 1979, Chinese citizen, no permanent residency abroad. Graduated from University of International Business and Economics with a bachelor's degree in International Trade in 2003; obtained an Executive MBA from UIBE in 2016. Joined the company in 2004, serving successively as Department Manager of Tianjin Suotong International Industry & Trade Co., Ltd., General Manager of the Marketing Center, Assistant to General Manager, General Manager of Suotong Hong Kong Materials Co., Ltd., and Vice President of the company. Currently serves as Vice President of the company. Mr. Huang holds 233,700 shares of the company, representing 0.05% of the total share capital. He has no relationship with other directors, senior management, the actual controller, or shareholders holding 5% or more. He meets all qualification requirements and has not been subject to any regulatory penalties or investigations in the past 36 months.

Ms. Zhang Xiawei Born in 1977, Chinese citizen, no permanent residency abroad, holds a bachelor's degree and accountant title. Previously worked at the Postal Savings and Remittance Branch of Wuhu City, Anhui Province, and Harbour Networks Ltd. Joined the company in 2006, serving successively as Financial Planning Manager, General Manager of the Finance Center, and CFO of the company. Currently serves as CFO of the company. Ms. Zhang holds 1,500 shares of the company, representing 0.0003% of the total share capital. She has no relationship with other directors, senior management, the actual controller, or shareholders holding 5% or more. She meets all qualification requirements and has not been subject to any regulatory penalties or investigations in the past 36 months.

Mr. Cheng Jie Born in 1986, Chinese citizen, no permanent residency abroad, holds a postgraduate degree, and possesses qualifications as a sponsor representative, certified public accountant (non-practicing), and legal professional. Previously worked at Dongxing Securities Co., Ltd. and the investment banking department of China International Capital Corporation Limited. He joined the company in March 2025 and currently serves as the Board Secretary and General Manager of the Securities Department. Mr. Cheng does not hold any shares in the company and has no relationship with directors, senior management, the actual controller, or shareholders holding 5% or more. He meets all qualification requirements and has not been subject to any regulatory penalties or investigations in the past 36 months.

Ms. Liu Suning Born in 1979, Chinese citizen, no permanent residency abroad, holds a bachelor's degree. Previously worked at the Institute of History of Science & Technology and Ancient Texts, Tsinghua University. Joined the company in 2008, currently serves as the Securities Affairs Representative of the company.

Stock Code: 688371 Stock Abbreviation: Fiwate Announcement Number: 2025-006 Jiangsu Fiwate Nano Technology Co., Ltd. Announcement on Change of Continuing Supervision Sponsor Representatives Jiangsu Fiwate Nano Technology Co., Ltd. recently received a notice from China International Capital Corporation Limited regarding a change in continuing supervision sponsor representatives. CICC, as the sponsor for the company's initial public offering on the STAR Market, originally assigned Mr. Mo Yongwei and Mr. Cheng Jie to perform continuing supervision duties, with the supervision period expected to last until December 31, 2025. Due to work adjustments, Mr. Cheng Jie will no longer be responsible for the continuing supervision of the company. To ensure orderly progress of the continuing supervision work, CICC has assigned Ms. Xu Lu to replace Mr. Cheng Jie as the sponsor representative to continue performing the continuing supervision duties. Following this change, the sponsor representatives for the company's IPO project are Mr. Mo Yongwei and Ms. Xu Lu. This change does not affect CICC's continuing supervision work for the company. The board of directors expresses sincere gratitude to Mr. Cheng Jie for his contributions during his tenure as sponsor representative.

This announcement is hereby issued.

The Board of Directors of Jiangsu Fiwate Nano Technology Co., Ltd. March 12, 2025

Attachment: Resume of Sponsor Representative Xu Lu, female, currently serves as Deputy General Manager of the Investment Banking Department of China International Capital Corporation Limited, and is a sponsor representative. Previously worked at PricewaterhouseCoopers Zhong Tian LLP and China Cinda Wealth Securities Co., Ltd. Joined the Investment Banking Department of CICC in October 2017. Has been directly responsible for or participated in projects including JPT Optoelectronics' STAR Market IPO, Fiwate's STAR Market IPO, BYD Semiconductor's private financing and ChiNext IPO, and Hantian Tiancheng's STAR Market IPO. Possesses extensive investment banking experience. Has not been subject to any CSRC administrative penalties or securities industry self-regulatory organization disciplinary actions in the past three years.