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                    |  |  | Q4 2020 | Q4 2021 | Q4 2022 | Q4 2023 | Q4 2024 |  
                    | |  | ASSETS | 
 |  |  |  |  |  |  |  
                    | |  | A. CURRENT ASSETS AND SHORT-TERM INVESTMENTS | 
 |  | 12,562 | 15,187 | 16,617 | 16,682 | 13,452 |  
                    | |  | I. Cash and cash equivalents | 
 |  | 4,777 | 4,659 | 2,501 | 2,700 | 3,493 |  
                    | |  | 1. Cash | 
 |  | 4,777 | 4,659 | 2,501 | 2,700 | 3,493 |  
                    | |  | 2. Cash equivalents | 
 |  |  |  |  |  |  |  
                    | |  | II. Short-term financial investments | 
 |  | 2,749 | 4,892 | 7,601 | 7,956 |  |  
                    | |  | 1. Trading securities | 
 |  |  |  |  |  |  |  
                    | |  | 2. Provision for diminution in value of trading securities | 
 |  |  |  |  |  |  |  
                    | |  | 3. Investments holding until maturity | 
 |  | 2,749 | 4,892 | 7,601 | 7,956 |  |  
                    | |  | III. Short-term receivables | 
 |  | 3,084 | 3,249 | 3,471 | 2,908 | 7,229 |  
                    | |  | 1.  Short-term receivables of customers | 
 |  | 1,357 | 1,227 | 1,351 | 2,552 | 3,110 |  
                    | |  | 2. Prepayments to suppliers | 
 |  | 314 | 260 | 353 |  | 4,838 |  
                    | |  | 3. Short-term intercompany receivables | 
 |  |  |  |  |  |  |  
                    | |  | 4. Receivables according to the progress of construction contracts | 
 |  |  |  |  |  |  |  
                    | |  | 5. Receivables on short-term loans | 
 |  |  |  |  |  |  |  
                    | |  | 6. Other short-term receivables | 
 |  | 1,470 | 1,836 | 2,244 | 846 | 393 |  
                    | |  | 7. Provision for doubtful short-term receivables | 
 |  | -57 | -74 | -477 | -489 | -1,113 |  
                    | |  | IV. Inventories | 
 |  | 1,953 | 2,387 | 3,044 | 3,118 | 1,780 |  
                    | |  | 1. Inventories | 
 |  | 1,953 | 2,387 | 3,044 | 3,118 | 1,780 |  
                    | |  | 2. Provision for decline in value of inventories | 
 |  |  |  |  |  |  |  
                    | |  | V. Other current assets | 
 |  |  |  |  |  | 950 |  
                    | |  | 1. Short-term prepaid expenses | 
 |  |  |  |  |  |  |  
                    | |  | 2. Deductible VAT | 
 |  |  |  |  |  | 950 |  
                    | |  | 3. Taxes and the State Receivables | 
 |  |  |  |  |  |  |  
                    | |  | 4. Repurchasing and reselling transactions in government bonds | 
 |  |  |  |  |  |  |  
                    | |  | 5. Other current assets | 
 |  |  |  |  |  |  |  
                    | |  | B. FIXED ASSETS AND LONG-TERM INVESTMENTS | 
 |  | 26,691 | 24,855 | 23,374 | 23,555 | 38,898 |  
                    | |  | I. Long-term receivables | 
 |  |  |  |  |  |  |  
                    | |  | 1. Long-term customer's receivables | 
 |  |  |  |  |  |  |  
                    | |  | 2. Business capital in the subsidiary units | 
 |  |  |  |  |  |  |  
                    | |  | 3. Internal long-term receivables | 
 |  |  |  |  |  |  |  
                    | |  | 4. Receivables on long-term loans | 
 |  |  |  |  |  |  |  
                    | |  | 5. Other long-term receivables | 
 |  |  |  |  |  |  |  
                    | |  | 6. Provision for doubtful long-term receivables | 
 |  |  |  |  |  |  |  
                    | |  | II. Fixed assets | 
 |  | 23,615 | 22,101 | 20,079 | 19,343 | 16,846 |  
                    | |  | 1. Tangible fixed assets | 
 |  | 23,153 | 21,763 | 19,863 | 19,220 | 16,729 |  
                    | |  | - Cost | 
 |  | 57,852 | 59,370 | 60,481 | 62,821 | 63,250 |  
                    | |  | - Accumulated depreciation | 
 |  | -34,698 | -37,608 | -40,619 | -43,601 | -46,521 |  
                    | |  | 2. Fixed assets of financial leasing | 
 |  |  |  |  |  |  |  
                    | |  | - Cost | 
 |  |  |  |  |  |  |  
                    | |  | - Accumulated depreciation | 
 |  |  |  |  |  |  |  
                    | |  | 3. Intangible fixed assets | 
 |  | 461 | 339 | 216 | 123 | 117 |  
                    | |  | - Cost | 
 |  | 545 | 545 | 545 | 545 | 545 |  
                    | |  | - Accumulated depreciation | 
 |  | -84 | -206 | -329 | -422 | -428 |  
                    | |  | III. Real Estate Investments | 
 |  |  |  |  |  |  |  
                    | |  | - Cost | 
 |  |  |  |  |  |  |  
                    | |  | - Accumulated depreciation | 
 |  |  |  |  |  |  |  
                    | |  | IV. Long-term assets in progress | 
 |  | 89 | 79 | 1,207 | 2,221 | 20,427 |  
                    | |  | 1. Costs of  long-term production, business in progress | 
 |  | 89 |  |  |  |  |  
                    | |  | 2. Costs of construction in progress | 
 |  |  | 79 | 1,207 | 2,221 | 20,427 |  
                    | |  | IV. Long-term financial investments | 
 |  |  |  |  |  |  |  
                    | |  | 1. Investment in subsidiaries | 
 |  |  |  |  |  |  |  
                    | |  | 2. Investments in associated companies, joint ventures | 
 |  |  |  |  |  |  |  
                    | |  | 3. Other investments in equity instruments | 
 |  |  |  |  |  |  |  
                    | |  | 4. Provision for diminution in value of financial long-term investments | 
 |  |  |  |  |  |  |  
                    | |  | 5. Investments holding until maturity | 
 |  |  |  |  |  |  |  
                    | |  | V. Total other long-term assets | 
 |  | 2,987 | 2,675 | 2,088 | 1,991 | 1,625 |  
                    | |  | 1. Long-term prepaid expenses | 
 |  | 2,934 | 2,653 | 2,066 | 1,969 | 1,611 |  
                    | |  | 2. Deferred income tax assets | 
 |  | 53 | 22 | 22 | 22 | 14 |  
                    | |  | 3. Other long-term assets | 
 |  |  |  |  |  |  |  
                    | |  | VI. Goodwills | 
 |  |  |  |  |  |  |  
                    | |  | TOTAL ASSETS | 
 |  | 39,253 | 40,042 | 39,991 | 40,237 | 52,351 |  
                    | |  | CAPITAL RESOURCES | 
 |  |  |  |  |  |  |  
                    | |  | A. LIABILITIES | 
 |  | 3,849 | 4,654 | 4,576 | 5,427 | 17,875 |  
                    | |  | I. Current liabilities | 
 |  | 3,849 | 4,593 | 4,479 | 5,294 | 7,890 |  
                    | |  | 1. Borrowings and short-term financial leased liabilities | 
 |  |  |  |  |  |  |  
                    | |  | 2. Long-term borrowings are due to pay | 
 |  |  |  |  |  |  |  
                    | |  | 3. Short-term payables to sellers | 
 |  | 126 | 64 | 12 | 185 | 3,407 |  
                    | |  | 4. Advances from customers | 
 |  | 154 | 456 | 670 | 436 | 109 |  
                    | |  | 5. Taxes and other payables to the State Budget | 
 |  | 533 | 497 | 419 | 542 | 600 |  
                    | |  | 6. Payables to employees | 
 |  | 2,334 | 2,020 | 1,878 | 2,611 | 1,943 |  
                    | |  | 7. Short-term accrued expenses | 
 |  | 265 | 111 | 464 | 399 | 904 |  
                    | |  | 8. Short-term intercompany payables | 
 |  |  |  |  |  |  |  
                    | |  | 9. Payables to the scheduled progress of construction contracts | 
 |  |  |  |  |  |  |  
                    | |  | 10. Short-term unrealized Revenue | 
 |  |  |  |  |  |  |  
                    | |  | 11. Other short-term payables | 
 |  | 122 | 969 | 483 | 516 | 528 |  
                    | |  | 12. Provision for short term payables | 
 |  |  |  |  |  |  |  
                    | |  | 13. Bonus and welfare fund | 
 |  | 316 | 476 | 553 | 604 | 398 |  
                    | |  | 14. Price stabilization fund | 
 |  |  |  |  |  |  |  
                    | |  | 15. Repurchasing and reselling transactions in government bonds | 
 |  |  |  |  |  |  |  
                    | |  | II. Long-term liabilities | 
 |  |  | 62 | 97 | 133 | 9,985 |  
                    | |  | 1. Long-term payables to sellers | 
 |  |  |  |  |  |  |  
                    | |  | 2. Long-term accrued expenses | 
 |  |  |  |  |  |  |  
                    | |  | 3. Intercompany payables on business capital | 
 |  |  |  |  |  |  |  
                    | |  | 4. Long-term intra-company payables | 
 |  |  |  |  |  |  |  
                    | |  | 5. Other long-term payables | 
 |  |  |  |  |  |  |  
                    | |  | 6. Borrowings and long-term financial leased liabilities | 
 |  |  |  |  |  | 9,800 |  
                    | |  | 7. Convertible bonds | 
 |  |  |  |  |  |  |  
                    | |  | 8. Deferred income tax payables | 
 |  |  |  |  |  |  |  
                    | |  | 9. Provision for job loss allowance | 
 |  |  |  |  |  |  |  
                    | |  | 10. Provision for long-term payables | 
 |  |  |  |  |  |  |  
                    | |  | 11. Long-term unrealized revenue | 
 |  |  |  |  |  |  |  
                    | |  | 12. Development fund of science and technology | 
 |  |  | 62 | 97 | 133 | 185 |  
                    | |  | B. OWNER'S EQUITY | 
 |  | 35,404 | 35,388 | 35,415 | 34,810 | 34,476 |  
                    | |  | I. ShareHolder's equity | 
 |  | 35,404 | 35,388 | 35,415 | 34,810 | 34,476 |  
                    | |  | 1. Owner's investment capital | 
 |  | 27,000 | 27,000 | 27,000 | 27,000 | 27,000 |  
                    | |  | 2. Share capital surplus | 
 |  |  |  |  |  |  |  
                    | |  | 3. Bond conversion option | 
 |  |  |  |  |  |  |  
                    | |  | 4. Other owner's capital | 
 |  | 1,578 | 1,578 | 1,578 | 1,578 | 1,578 |  
                    | |  | 5. Treasury shares | 
 |  |  |  |  |  |  |  
                    | |  | 6. Differences upon asset revaluation | 
 |  |  |  |  |  |  |  
                    | |  | 7. Differences upon foreign exchange rate | 
 |  |  |  |  |  |  |  
                    | |  | 8. Investment and development funds | 
 |  | 2,414 | 2,647 | 2,791 | 2,929 | 3,006 |  
                    | |  | 9. Financial reserve funds | 
 |  |  |  |  |  |  |  
                    | |  | 10. Other funds belonging to owner's equity | 
 |  |  |  |  |  |  |  
                    | |  | 11. After tax undistributed profit | 
 |  | 4,411 | 4,162 | 4,046 | 3,303 | 2,891 |  
                    | |  | - After tax undistributed profit accumulated to the end of prior period | 
 |  | 2,034 | 2,684 | 2,615 | 2,508 | 1,911 |  
                    | |  | - Profit after tax undistributed this period | 
 |  | 2,378 | 1,478 | 1,431 | 795 | 981 |  
                    | |  | 12. Investment capital resource for basic construction | 
 |  |  |  |  |  |  |  
                    | |  | 13. Assistance fund for arrangement of enterprises | 
 |  |  |  |  |  |  |  
                    | |  | 14. interest of shareholders who not control | 
 |  |  |  |  |  |  |  
                    | |  | II. Funding resources and other funds | 
 |  |  |  |  |  |  |  
                    | |  | 1. Funding resources | 
 |  |  |  |  |  |  |  
                    | |  | 2. Funding resources that form fixed assets | 
 |  |  |  |  |  |  |  
                    | |  | 3. Retrenchment provision fund | 
 |  |  |  |  |  |  |  
                    | |  | TOTAL CAPITAL RESOURCES | 
 |  | 39,253 | 40,042 | 39,991 | 40,237 | 52,351 |      
    There is no report. |  |