Stock code: 000012; 200012 Short form of the stock: CSG A; CSG B Notice No：2026-037 CSG HOLDING CO., LTD. SUMMARY of SEMI-ANNUAL REPORT 2026 Chairman of the Board: Chen Lin August 2026 I. Important notice This Semi-Annual Report Summary is derived from the full text of the Semi-Annual Report. To fully understand the Company’s operating results, financial position and future development plans, investors shall carefully read the full Semi-Annual Report via the media designated by the China Securities Regulatory Commission. All directors were present at the board meeting convened to deliberate this Report. This report is prepared both in Chinese and English. Should there be any inconsistency between the Chinese and English versions, the Chinese version shall prevail. Notice of Non-standard Audit Opinion □Applicable √ Not applicable Profit Distribution Proposal or Capital-to-share Conversion Proposal for the Reporting Period, Deliberated by the Board of Directors □Applicable √ Not applicable The Company plans not to distribute cash dividends, issue bonus shares, nor convert capital reserves into share capital. Preferred-Share Profit Distribution Proposal for the Reporting Period Adopted by the Board Resolution □Applicable √ Not applicable II. The basic information of the Company 1. Company profile Short form for share Southern Glass A, Southern Glass B Code for share 000012、200012 Listing stock exchange Shenzhen Stock Exchange Person/Way to contact Secretary of the Board Representative of securities affairs Name Xu Lei Yu Xiaojing Contact Address CSG Building, No. 1 Industrial Sixth CSG Building, No. 1 Industrial Sixth Road, Shekou, Shenzhen, China Road, Shekou, Shenzhen, China Telephone (86)755-26860666 (86)755-26860666 Fax (86)755-26860685 (86)755-26860685 2. Key Accounting Data and Financial Indicators Whether the Company is required to retrospectively adjust or restate accounting data of prior years □Yes ？No The report period The same period Increase/decreas (Jan. to Jun.2026) of last year (Jan. e year-on-year to Jun.2025) Operating Revenue (RMB) 6,118,978,774 6,483,562,120 -5.62% Net profit attributable to shareholders of the listed company -421,151,211 74,531,505 -665.06% (RMB) Net profit attributable to shareholders of the listed company -469,705,829 21,748,795 -2,259.69% excluding non-recurring gains and losses (RMB) Net cash flows from operating activities (RMB) 205,008,283 384,695,267 -46.71% Basic earnings per share (RMB/share) -0.14 0.02 -800% Diluted earnings per share (RMB/share) -0.14 0.02 -800% Weighted average return on equity (ROE) -3.26% 0.55% -3.81% Increase/decreas End of the period End of last year e in this period- end over that of last year-end Total assets (RMB)