Runben Aerospace Technology Co., Ltd. 2025 Special Report on the Storage, Management, and Use of Raised Funds

Stock Code: 001316 Stock Abbreviation: Runben Aerospace Technology Announcement No.: 2026-023 Runben Aerospace Technology Co., Ltd. 2025 Special Report on the Storage, Management, and Use of Raised Funds The Company and all members of the Board of Directors guarantee that the information disclosed is true, accurate, and complete, and that there are no false records, misleading statements, or significant omissions. In accordance with the "Supervisory Rules for the Management of Raised Funds by Listed Companies" issued by the China Securities Regulatory Commission, the "Shenzhen Stock Exchange Listed Company Self-Regulatory Supervision Guidelines No. 1 - Normative Operation of Main Board Listed Companies" issued by the Shenzhen Stock Exchange, and relevant announcement format regulations, the Company's report on the storage and use of raised funds in 2025 is as follows: I. Basic Situation of Raised Funds (I) Amount of Funds Actually Raised and Time of Arrival According to the "Approval of the Initial Public Offering of Ordinary Shares (A Shares) of Runben Aerospace Technology Co., Ltd." (Securities Regulatory Permit [2022] No. 978) issued by the China Securities Regulatory Commission, the Company issued 20 million ordinary shares (A shares) at an issue price of RMB 29.20 per share, with a par value of RMB 1.00 per share. The total amount of raised funds was RMB 584,000,000.00. After deducting relevant issuance expenses (excluding VAT) of RMB 11,091,980,000.00, the net amount of raised funds was RMB 47,308,020,000.00. The raised funds were transferred to the Company's designated account on June 21, 2022. Tianzhi International Certified Public Accountants (Special General Partnership) audited the arrival of the raised funds from the Company's initial public offering of shares on June 21, 2022, and issued the "Capital Verification Report" (Tianzhi Accounting Firm [2022] No. 35214). (II) Amount Used in the Current Year and Year-End Balance As of December 31, 2025, the cumulative investment in the Company's raised fund projects reached RMB 47,308.02 million, with no remaining unused raised funds. All dedicated accounts for raised funds have been closed. Item June 21, 2022 Total Raised Funds Less: Issuance Expenses Unit: RMB Amount 584,000,000.00 110,919,801.89 1 Net amount of raised funds on June 21, 2022 Add: Net interest income from bank wealth management and bank wealth management income after deducting bank handling fees in 2022 Less: Cumulative use of raised funds in 2022 Of which: ① Repayment of self-raised funds previously invested ② Raised funds used in 2022 Balance of unused raised funds as of December 31, 2022 Of which: ① Purchase of bank wealth management products ② Balance of dedicated raised fund accounts Add: Net interest income from raised funds and wealth management income after deducting handling fees in 2023 Less: Cumulative use of raised funds in 2023 Balance of unused raised funds as of December 31, 2023 Of which: ① Purchase of bank wealth management products ② Balance of dedicated raised fund accounts ③ Balance of funds in margin accounts Add: Net interest income from raised funds and wealth management income after deducting handling fees in 2024 Less: Cumulative use of raised funds in 2024 Of which: Funds used for permanent replenishment of working capital upon project completion and termination Balance of unused raised funds as of December 31, 2024 Of which: ① Purchase of bank wealth management products ② Balance of dedicated raised fund accounts Add: Net interest income from raised funds and wealth management income after deducting handling fees in 2025 Less: Permanent replenishment of working capital with surplus raised funds upon project completion and termination Less: Permanent replenishment of working capital with cumulative interest income and wealth management income after deducting handling fees Balance of unused raised funds as of December 31, 2025 473,080,198.11 2,041,963.50 117,464,466.42 30,030,111.77 87,434,354.65 357,657,695.19 274,350,000.00 83,307,695.19 2,895,356.79 111,470,372.63 249,082,679.35 58,950,000.00 186,916,679.35 3,216,000.00 2,646,415.91 134,273,015.92 74,591,274.93 117,456,079.34 81,000,000.00 36,456,079.34 156,561.93 109,872,343.14 7,740,298.13 0.00 Note: In the table above, the self-raised funds previously invested and replaced by raised funds in 2022 were fully replaced in 2022. Tianzhi International Certified Public Accountants (Special General Partnership) conducted a special audit and issued the "Attestation Report on Runben Aerospace Technology Co., Ltd. Replacing Pre-Invested Raised Funds and Paying Issuance Expenses with Self-Raised Funds" (Tianzhi Accounting Firm [2022] No. 35214-1) on July 7, 2022. II. Storage and Management of Raised Funds (I) Management System for Raised Funds The Company has formulated the "Management Measures for Raised Funds of Runben Aerospace Technology Co., Ltd." in accordance with the requirements of the "Company Law of the People's Republic of China," the "Securities Law of the People's Republic of China," the "Administrative Measures for the Registration of Issuance of Securities by Listed Companies," the "Supervisory Requirements for the Management and Use of Raised Funds by Listed Companies" (CSRC Regulatory Guidance No. 2), the "Shenzhen Stock Exchange Stock Listing Rules," and the "Shenzhen Stock Exchange Listed Company Self-Regulatory Supervision Guidelines No. 1 - Normative Operation of Main Board Listed Companies." The Company implements a dedicated account storage system for raised funds, and has stipulated requirements for the storage, use, project implementation management, investment project changes, and use of raised funds. (II) Supervision Agreement for Raised Funds In accordance with the requirements of the Shenzhen Stock Exchange and relevant regulations, the Company has signed "Tripartite Supervision Agreements for Raised Funds" with Beijing Bank Co., Ltd. Shenzhen Central Branch, Bank of Ningbo Co., Ltd. Shenzhen Xili Branch, China Everbright Bank Co., Ltd. Guangdong Free Trade Zone Shenzhen Qianhai Branch, and Industrial and Commercial Bank of China Co., Ltd. Shenzhen High-tech South District Branch, and Guosen Securities Co., Ltd. The Company has also signed "Quadrupartite Supervision Agreements for Raised Funds" with its wholly-owned subsidiary, China Merchants Bank Shenzhen University Town Branch, Bank of China Huizhou Huicheng Branch, China Merchants Bank Co., Ltd. Hangzhou Yuhang Branch, and Guosen Securities Co., Ltd. The aforementioned supervision agreements do not have significant differences from the template supervision agreements stipulated by the Shenzhen Stock Exchange, and have been effectively performed. As of December 31, 2025, all of the Company's dedicated raised fund accounts have been closed. Upon the cancellation of the dedicated raised fund accounts, the supervision agreements signed by the Company with the sponsor and the account-opening banks have terminated. The sponsor's responsibilities for ongoing supervision related to the use of raised funds have also ended. (III) Dedicated Account Storage of Raised Funds As of December 31, 2025, the Company's raised funds have been fully utilized, and all dedicated raised fund accounts have been closed. Unit: RMB Opening Bank Bank Account Number Balance Remarks Beijing Bank Co., Ltd. Shenzhen Central Branch 20000027837000091260071 0.00 Closed Bank of Ningbo Co., Ltd. Shenzhen Xili Branch 73130122000045155 0.00 Closed China Everbright Bank Co., Ltd. Guangdong Free Trade Zone Shenzhen Qianhai Branch 56020188000027832 0.00 Closed Bank of Communications Co., Ltd. Shenzhen Xiangzhou Branch 44306606513005847435 0.00 Closed Industrial and Commercial Bank of China Co., Ltd. Shenzhen High-tech South District Branch 4000134919100094064 0.00 Closed China Merchants Bank Co., Ltd. Shenzhen University Town Branch 755917384010604 0.00 Closed Bank of China Co., Ltd. Huizhou Huicheng Branch 637972838959 0.00 Closed China Merchants Bank Co., Ltd. Hangzhou Yuhang Branch 571920646610008 0.00 Closed III. Actual Use of Raised Funds in the Current Year 3 (I) Explanation of the Comparison Table of Raised Fund Usage The actual use of raised funds in 2025 is detailed in the "Comparison Table of Raised Fund Usage" attached to this report. (II) Prior Investment and Repayment of Raised Funds Projects On July 7, 2022, the Company held the 10th meeting of the First Board of Directors and the 9th meeting of the First Supervisory Board, and approved the "Proposal on Using Raised Funds to Repay Self-Raised Funds Previously Invested in Raised Fund Projects and for Issuance Expenses." It was agreed to use raised funds to repay RMB 30,030,100.00 of self-raised funds previously invested in raised fund projects and RMB 4,937,100.00 of issuance expenses. Tianzhi International Certified Public Accountants (Special General Partnership) audited and issued the "Attestation Report on Runben Aerospace Technology Co., Ltd. Replacing Pre-Invested Raised Funds and Paying Issuance Expenses with Self-Raised Funds" (Tianzhi Accounting Firm [2022] No. 35214-1). The aforementioned funds were repaid within 2022. There were no repayments in the reporting period. (III) Changes in the Location and Method of Implementation of Raised Fund Investment Projects During the reporting period, there were no changes in the location or method of implementation of the Company's raised fund investment projects. (IV) Cash Management of Temporarily Idle Raised Funds On May 23, 2023, the Company held its annual shareholders' meeting and approved the "Proposal on Cash Management of Temporarily Idle Raised Funds and Own Funds." It was agreed that the Company could use temporarily idle raised funds not exceeding RMB 30,000,000.00 and own funds of RMB 40,000,000.00 for cash management, provided that the construction of raised fund investment projects and normal operations of the Company were not affected. These funds would be invested in low-risk, highly liquid, short-term (within 12 months) wealth management products issued by commercial banks, securities companies, and other financial institutions, or deposited in forms such as fixed deposits, structured deposits, and call deposits. This limit includes the amount approved at the 10th meeting of the First Board of Directors and the 9th meeting of the First Supervisory Board. This limit is valid for 12 months from the date of approval by the shareholders' meeting, and the General Manager is authorized to exercise investment decision-making power and sign relevant contracts and documents within this limit and period. The specific matters will be organized and implemented by the Company's finance department. Funds within this limit can be used cyclically within the investment validity period. The principal and income from cash management of idle raised funds will be returned to the dedicated raised fund account upon maturity. 4 On May 21, 2024, the Company held its annual shareholders' meeting and approved the "Proposal on Cash Management of Temporarily Idle Raised Funds and Own Funds." It was agreed that the Company could use temporarily idle raised funds not exceeding RMB 15,000,000.00 and own funds of RMB 40,000,000.00 for cash management, provided that the construction of raised fund investment projects and normal operations of the Company were not affected. These funds would be invested in low-risk, highly liquid, short-term (within 12 months) wealth management products issued by commercial banks, securities companies, and other financial institutions, or deposited in forms such as fixed deposits, structured deposits, and call deposits. This limit is valid for 12 months from the date of approval by the shareholders' meeting, and funds can be used cyclically within the validity period. As of December 31, 2025, all wealth management products purchased with idle raised funds for cash management have matured and been redeemed. The idle raised funds used for cash management have been returned to the dedicated raised fund account upon maturity. (V) Use of Idle Raised Funds to Temporarily Supplement Working Capital On January 12, 2024, the Company held the 6th meeting of the Second Board of Directors and the 5th meeting of the Second Supervisory Board, and approved the "Proposal on Using Part of Idle Raised Funds to Temporarily Supplement Working Capital." It was agreed that the Company could use idle raised funds not exceeding RMB 15,000,000.00 to temporarily supplement working capital, provided that the progress of raised fund investment projects was not affected. The usage period is no more than 12 months from the date of approval by the Board of Directors. The Company promises to return the funds to the dedicated raised fund account in a timely manner. Within this limit and period, funds can be used cyclically. Upon maturity or when needed for raised fund investment projects, the funds will be returned to the dedicated raised fund account. As of December 31, 2025, all dedicated raised fund accounts for the Company's initial public offering of shares have been closed. The balance of raised funds used for temporary working capital supplementation is RMB 0. (VI) Use of Raised Funds in Margin Accounts to Issue Bank Acceptance Drafts for Payment of Raised Fund Investment Projects On April 26, 2023, the Company held the 15th meeting of the First Board of Directors and the 14th meeting of the First Supervisory Board, and approved the "Proposal on Using Raised Funds in Margin Accounts to Issue Bank Acceptance Drafts for Payment of Raised Fund Investment Projects." It was agreed that during the implementation of raised fund investment projects, the Company would open dedicated raised fund margin accounts to issue bank acceptance drafts for payment of raised fund investment projects. The General Manager or their authorized representative was authorized to handle the opening of these raised fund margin accounts and other related matters. 5 In 2023, RMB 3,216,000.00 was deposited as margin in the raised fund margin account. The corresponding drafts were accepted and matured in June 2024. As of December 31, 2025, the balance of the Company's raised fund margin account is RMB 0. (VII) Project Completion, Termination, and Permanent Replenishment of Working Capital with Surplus Raised Funds On December 16, 2024, the Company held the 3rd extraordinary shareholders' meeting of 2024 and approved the "Proposal on Project Completion, Termination, and Permanent Replenishment of Working Capital with Surplus Raised Funds." It was agreed that based on the Company's actual operating conditions and future development plans, the "Guangdong Runhe New Materials Company Non-metallic Materials, Composite Materials, and Aviation Cleaning Products Production Base New Construction Project," a raised fund investment project from the initial public offering, would be completed. The "Runbei Information Technology Upgrade Project," "New Materials R&D Center Project," and "Advanced Aviation Composite Materials R&D Center and Production Base Project" would be terminated. The remaining raised funds from these raised fund investment projects would be permanently used to supplement working capital. Among these, the "Guangdong Runhe New Materials Company Non-metallic Materials, Composite Materials, and Aviation Cleaning Products Production Base New Construction Project" has reached the predetermined usable state and meets the conditions for completion. During the construction and implementation, the Company strictly adhered to the relevant regulations for the use of raised funds. While ensuring the normal implementation of the project, it conducted refined cost control and strictly managed all aspects of the project, reasonably reducing project construction costs and related expenses, resulting in a fund surplus: Item Guangdong Runhe New Materials Company Non-metallic Materials, Composite Materials, and Aviation Cleaning Products Production Base New Construction Project Total Unit: RMB (Ten Thousand Yuan) Adjusted Investment Amount Surplus Amount Surplus Ratio 13,651.78 1,093.59 8.01% 13,651.78 1,093.59 The "Runbei Information Technology Upgrade Project" has been terminated. The intelligent warehousing management system WMS and customer relationship management system CRM, and Kingdee Cloud Star ERP system purchased earlier have begun operation. Information technology is a module that requires continuous improvement and upgrading in enterprise operations. The specific investment direction will change based on actual conditions in the future, and there is uncertainty. Given that the Company's current information technology system can basically meet the current operational management needs, to improve the efficiency of raised fund utilization and to better leverage the efficiency of capital, and to concentrate efforts on promoting the development of the Company's main business, the project has been terminated after careful consideration. 6 The "New Materials R&D Center Project" has been terminated. The Company has already established R&D laboratories for aviation fine chemicals and aviation consumable materials with its own funds, possessing the capabilities and hardware for product initial testing, small-scale testing, and pilot testing. The equipment and R&D content partially overlap with this project. Furthermore, the Company has built its own factory buildings through the raised fund investment project "Guangdong Runhe New Materials Company Non-metallic Materials, Composite Materials, and Aviation Cleaning Products Production Base New Construction Project," which can also be used as an R&D center, eliminating the need to continue leasing and renovating external operating sites for R&D in Shenzhen as originally planned. A portion of the investment has already met the functional R&D testing requirements for the laboratory stage. To avoid wasting resources due to repeated investment, the Company will no longer continue to invest in this project. The "Advanced Aviation Composite Materials R&D Center and Production Base Project" has been terminated. During the implementation of this project, the Company encountered objective circumstances such as difficulties in obtaining airworthiness certification for core products and challenges in overcoming key technologies. Simultaneously, external market competition has intensified, and some competitors have already possessed mature technological development capabilities and production capacity, with products that meet the needs of the Company's target customer base in terms of process capability and delivery. Continued investment would not be in the best interest of the Company's shareholders. After careful consideration, the Company has decided to cease further investment. As of December 31, 2025, the Company's raised funds have been fully utilized, and the balance in the dedicated raised fund accounts is RMB 0. All dedicated raised fund accounts have been closed. IV. Changes in the Use of Raised Fund Investment Projects On January 12, 2024, the 6th meeting of the Second Board of Directors and the 5th meeting of the Second Supervisory Board of the Company approved the "Proposal on Adjusting the Investment Scale of Some Raised Fund Projects, Adding New Raised Fund Projects, and Increasing Capital to Subsidiaries for the Implementation of Raised Fund Projects." It was agreed to add the new raised fund project "Advanced Aviation Composite Materials R&D Center and Production Base Project." The total investment amount of the initial public offering raised fund project "Guangdong Runhe New Materials Company Non-metallic Materials, Composite Materials, and Aviation Cleaning Products Production Base New Construction Project" was adjusted from RMB 26,009.78 million to RMB 15,009.78 million. The reduced amount of RMB 11,000 million will be used to implement the new project "Advanced Aviation Composite Materials R&D Center and Production Base Project." The sponsor has no objection to the Company's adjustment of the investment scale of some raised fund projects and the addition of new raised fund projects and capital increase to its wholly-owned subsidiary for the implementation of raised fund projects. On January 31, 2024, the Company held its first extraordinary shareholders' meeting of 2024 and approved the "Proposal on Adjusting the Investment Scale of Some Raised Fund Projects, Adding New Raised Fund Projects, and Increasing Capital to Subsidiaries for the Implementation of Raised Fund Projects." It was agreed to adjust the investment scale of some raised fund projects and add new raised fund projects and increase capital to subsidiaries. 7 On November 26, 2024, the Company held the 13th meeting of the Second Board of Directors and the 12th meeting of the Second Supervisory Board, and approved the "Proposal on Project Completion, Termination, and Permanent Replenishment of Working Capital with Surplus Raised Funds." It was agreed that based on the Company's actual operating conditions and future development plans, the "Guangdong Runhe New Materials Company Non-metallic Materials, Composite Materials, and Aviation Cleaning Products Production Base New Construction Project," a raised fund investment project from the initial public offering, would be completed. The "Runbei Information Technology Upgrade Project," "New Materials R&D Center Project," and "Advanced Aviation Composite Materials R&D Center and Production Base Project" would be terminated. The remaining raised funds from these raised fund investment projects would be permanently used to supplement working capital. The sponsor has no objection to the Company's project completion, termination, and permanent replenishment of working capital with surplus raised funds. On December 16, 2024, the Company held the 3rd extraordinary shareholders' meeting of 2024 and approved the "Proposal on Project Completion, Termination, and Permanent Replenishment of Working Capital with Surplus Raised Funds." It was agreed to complete the raised fund projects and permanently supplement working capital with the remaining raised funds. V. Problems in the Use and Disclosure of Raised Funds The Company's Board of Directors believes that the Company has disclosed the storage and actual use of its raised funds in a timely, truthful, accurate, and complete manner in accordance with the "Supervisory Requirements for the Management and Use of Raised Funds by Listed Companies" (CSRC Regulatory Guidance No. 2), the "Shenzhen Stock Exchange Listed Company Self-Regulatory Supervision Guidelines No. 1 - Normative Operation of Main Board Listed Companies" issued by the Shenzhen Stock Exchange, and relevant announcement format regulations. There have been no violations of the management of raised funds. The Company has fulfilled its disclosure obligations regarding the direction and progress of raised fund utilization. VI. Situations with Multiple Financings and Raised Fund Usage in the Same Year The Company has no situations with multiple financings and raised fund usage in the same year. Attachment: Comparison Table of Raised Fund Usage Hereby announced. Runben Aerospace Technology Co., Ltd. Board of Directors April 14, 2026 8 Attachment Runben Aerospace Technology Co., Ltd. Comparison Table of Raised Fund Usage As of Date: December 31, 2025 Prepared by: Runben Aerospace Technology Co., Ltd. Total Raised Funds Amount Unit: RMB (Ten Thousand Yuan) 47,308.02 Amount of Raised Funds Changed in Purpose During the Reporting Period 0 Cumulative Amount of Raised Funds Changed in Purpose 19,848.95 Percentage of Cumulative Raised Funds Changed in Purpose 41.96% Committed Investment Projects and Allocation of Surplus Funds

1. Guangdong Runhe New Materials Company Non-metallic Materials, Composite Materials, and Aviation Cleaning Products Production Base New Construction Project Has the project been changed (including partial changes)? Yes Committed Investment Amount of Raised Funds 24,651.78 Adjusted Investment Amount (1) 12,558.19 Amount Invested in the Current Year 0 Amount of Raised Funds Invested by the End of the Period (2) 12,558.19 Project Completion Rate (%) (3) = (2)/(1) 100 Project Reached Predetermined Usable Date — Amount Achieved in the Current Year 1479.47 Whether Expected Benefits Were Achieved No Whether Project Feasibility Has Significantly Changed Yes
2. Runbei Information Technology Upgrade Project Yes 3,499.93 588.90 0 588.90 100 — Not Applicable Yes 9 Item
3. New Materials R&D Center Project Yes 5,556.31 711.98 0 711.98 100 — Not Applicable Yes
4. Supplementation of Working Capital Yes 13,600.00 32,046.37 10,987.23 32,046.37 100 — Not Applicable No
5. Advanced Aviation Composite Materials R&D Center and Production Base Project Yes 1,402.58 0 1,402.58 100 — Not Applicable Yes Subtotal of Committed Investment Projects 47,308.02 47,308.02 10,987.23 47,308.02 1479.47 Allocation of Surplus Funds Not Applicable Reasons for Not Reaching Planned Progress or Expected Benefits "Guangdong Runhe New Materials Company Non-metallic Materials, Composite Materials, and Aviation Cleaning Products Production Base New Construction Project" achieved a total actual benefit of RMB 2,651.80 million in 2024 and 2025 (the actual benefit in 2025 is not yet audited), accounting for 49.84% of the committed benefit. The project did not achieve the expected benefits mainly due to market changes, the long cycle from civil aviation certification to mass production of new materials, and strategic adjustments in the company's production base. The capital expenditure for aircraft cargo hold side panels and bulk cargo hold floors, and cabin interior decorative films decreased. The company issued announcements in January and November 2024 regarding the reduction of raised fund investment, as detailed in Section IV, "Changes in the Use of Raised Fund Investment Projects" of this report. The committed raised fund investment was reduced from RMB 24,651.78 million to RMB 12,558.19 million, a reduction of 49.06% in investment scale. Description of Significant Changes in Project Feasibility See Section III, (VII) Project Completion, Termination, and Permanent Replenishment of Working Capital with Surplus Raised Funds. Not Applicable Amount and Use of Surplus Funds Not Applicable Changes in Location of Raised Fund Investment Projects None Changes in Implementation Methods of Raised Fund Investment Projects None Prior Investment and Repayment of Raised Fund Projects See Section III, (II) Prior Investment and Repayment of Raised Fund Projects. Use of Idle Raised Funds to Temporarily Supplement Working Capital See Section III, (V) Use of Idle Raised Funds to Temporarily Supplement Working Capital. 10 Status of Cash Management of Idle Raised Funds Project Implementation Resulting in Surplus Raised Funds Amount and Reasons Purpose and Destination of Unused Raised Funds Problems in Raised Fund Usage and Disclosure or Other Matters See Section III, (IV) Status of Cash Management of Temporarily Idle Raised Funds. See Section III, (VII) Project Completion, Termination, and Permanent Replenishment of Working Capital with Surplus Raised Funds. As of December 31, 2025, the Company's raised funds have been fully utilized, and all dedicated raised fund accounts have been closed. None 11