Changchai Company, Limited Interim Report 2023 (Summary) Stock Code: 000570, 200570 Stock Name: Changchai, Changchai-B Announcement No. 2023-057 CHANGCHAI COMPANY, LIMITED INTERIM REPORT 2023 (SUMMARY) Part I Important Notes This Summary is based on the full Interim Report of Changchai Company, Limited (together with its consolidated subsidiaries, the “Company”, except where the context otherwise requires). In order for a full understanding of the Company’s operating results, financial condition and future development plans, investors should carefully read the aforesaid full text, which has been disclosed together with this Summary on the media designated by the China Securities Regulatory Commission (the “CSRC”). All the Company’s directors have attended the Board meeting for the review of this Report and its summary. Independent auditor’s modified opinion: □ Applicable Not applicable Board-approved interim cash and/or stock dividend plan for ordinary shareholders: □ Applicable Not applicable The Company has no interim dividend plan, either in the form of cash or stock. Board-approved interim cash and/or stock dividend plan for preference shareholders: □ Applicable Not applicable This Report and its summary have been prepared in both Chinese and English. Should there be any discrepancies or misunderstandings between the two versions, the Chinese versions shall prevail. Part II Key Corporate Information 1. Stock Profile Changchai, Stock name Stock code 000570, 200570 Changchai-B Stock exchange Shenzhen Stock Exchange Contact information Board Secretary Securities Representative Name He Jianjiang 123 Huaide Middle Road, Office address Changzhou, Jiangsu, China Tel. (86)519-68683155 E-mail address cchjj@changchai.com 1 Changchai Company, Limited Interim Report 2023 (Summary) 2. Key Financial Information Indicate by tick mark whether there is any retrospectively restated datum in the table below. □ Yes No H1 2023 H1 2022 Change (%) Operating revenue (RMB) 1,350,517,639.85 1,178,222,492.04 14.62% Net profit attributable to the listed 131,937,324.66 -14,595,269.61 —— company’s shareholders (RMB) Net profit attributable to the listed company’s shareholders before 5,825,543.98 -5,809,360.07 —— exceptional gains and losses (RMB) Net cash generated from/used in operating -104,796,816.75 -74,300,501.12 —— activities (RMB) Basic earnings per share (RMB/share) 0.1870 -0.0207 —— Diluted earnings per share (RMB/share) 0.1870 -0.0207 —— Weighted average return on equity (%) 3.93% -0.48% 4.41% 30 June 2023 31 December 2022 Change (%) Total assets (RMB) 5,559,083,368.07 5,219,359,853.42 6.51% Equity attributable to the listed company’s 3,485,429,025.82 3,284,710,665.90 6.11% shareholders (RMB) 3. Shareholders and Their Holdings as at the end of the Reporting Period Unit: share Number of preference Number of ordinary shareholders 51,091 shareholders with resumed 0 voting rights (if any) Top 10 shareholders Shares in pledge, Name of Nature of Shareholding marked or Number of shares Restricted shares frozen shareholder shareholder percentage Shar Status es Changzhou State-owned Investment Group 32.26% 227,663,417 56,818,181 legal person Co., Ltd Domestic Chen Jian natural 0.65% 4,580,300 person KGI ASIA Foreign 0.44% 3,101,695 LIMITED legal person Huatai Securities State-owned 0.38% 2,667,721 Co., Ltd. legal person China Minsheng Bank-Goldstate Yuanqi Dynamic Asset Allocation Other 0.27% 1,880,000 Mixed Type Securities Investment Fund Domestic Li Suinan 0.23% 1,591,300 natural 2 Changchai Company, Limited Interim Report 2023 (Summary) person Domestic Huang Guoliang natural 0.22% 1,528,891 person Domestic Xue Hong natural 0.21% 1,516,900 person Domestic Xu Qingguo natural 0.21% 1,500,300 person Bank of China Co., Ltd.-GFund Quantified Other 0.21% 1,456,200 Multifactor Equity Securities Investment Fund It is unknown whether there is among the top 10 public shareholders and Related or acting-in-concert the top 10 unrestricted public shareholders any related parties or acting-in- parties among the shareholders concert parties as defined in the Administrative Measures for Information above Regarding Shareholding Alteration. Shareholders involved in Shareholder Chen Jian held 2,917,800 shares in the Company through his securities margin trading (if any) margin account. 4. Change of the Controlling Shareholder and the De Facto Controller in the Reporting Period Change of the controlling shareholder in the Reporting Period: □ Applicable Not applicable The controlling shareholder remained the same in the Reporting Period. Change of the de facto controller in the Reporting Period: □ Applicable Not applicable The de facto controller remained the same in the Reporting Period. 5. Number of Preference Shareholders and Shareholdings of Top 10 of Them □ Applicable Not applicable No preference shareholders in the Reporting Period. 6. Outstanding Bonds at the Date when this Report Was Authorized for Issue □ Applicable Not applicable Part III Significant Events 1. Expropriation of the Wuxing branch company’s properties on state-owned land and compensation 3 Changchai Company, Limited Interim Report 2023 (Summary) On 25 May 2023, the Proposal on the Intention to Sign the Agreement on the Expropriation of the Properties of the Wuxing Branch Company on State-owned Land in Changzhou City and the Compensation was approved at the 17th Meeting of the Ninth Board of Directors. Later, the said matter was approved at the First Extraordinary General Meeting of Shareholders in 2023 dated 12 June 2023. As such, the Company was agreed to sign a contract with Changzhou Zhonglou District Housing and Urban-Rural Development Bureau on the expropriation of the Wuxing branch company’s properties on state-owned land and the compensation, with the contractual total compensation amount being RMB117 million. On 14 June 2023, the Company signed the Agreement on the Expropriation of the Properties of the Wuxing Branch Company on State-owned Land in Changzhou City and the Compensation with Changzhou Zhonglou District Housing and Urban-Rural Development Bureau, and received the first compensation payment of RMB70 million on 28 June 2023. 4