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                    |  |  | Q4 2020 | Q4 2021 | Q4 2022 | Q4 2023 | Q4 2024 |  
                    | |  | ASSETS | 
 |  |  |  |  |  |  |  
                    | |  | A. CURRENT ASSETS AND SHORT-TERM INVESTMENTS | 
 |  | 158,297 | 151,593 | 148,570 | 111,059 | 36,445 |  
                    | |  | I. Cash and cash equivalents | 
 |  | 9,989 | 12,186 | 4,262 | 21,150 | 5,230 |  
                    | |  | 1. Cash | 
 |  | 989 | 12,186 | 4,262 | 21,150 | 5,230 |  
                    | |  | 2. Cash equivalents | 
 |  | 9,000 |  |  |  |  |  
                    | |  | II. Short-term financial investments | 
 |  | 8,200 |  | 20,000 |  |  |  
                    | |  | 1. Trading securities | 
 |  |  |  |  |  |  |  
                    | |  | 2. Provision for diminution in value of trading securities | 
 |  |  |  |  |  |  |  
                    | |  | 3. Investments holding until maturity | 
 |  | 8,200 |  | 20,000 |  |  |  
                    | |  | III. Short-term receivables | 
 |  | 137,095 | 136,778 | 121,810 | 87,535 | 28,859 |  
                    | |  | 1.  Short-term receivables of customers | 
 |  | 115,346 | 104,865 | 55,706 | 28,486 | 13,207 |  
                    | |  | 2. Prepayments to suppliers | 
 |  | 2,238 | 2,160 | 2,160 | 2,193 | 2,160 |  
                    | |  | 3. Short-term intercompany receivables | 
 |  |  |  |  |  |  |  
                    | |  | 4. Receivables according to the progress of construction contracts | 
 |  |  |  |  |  |  |  
                    | |  | 5. Receivables on short-term loans | 
 |  | 15,300 | 24,300 | 41,300 | 41,600 | 7,100 |  
                    | |  | 6. Other short-term receivables | 
 |  | 23,274 | 24,517 | 42,085 | 34,722 | 25,858 |  
                    | |  | 7. Provision for doubtful short-term receivables | 
 |  | -19,063 | -19,063 | -19,441 | -19,465 | -19,465 |  
                    | |  | IV. Inventories | 
 |  | 4 | 4 | 4 | 4 |  |  
                    | |  | 1. Inventories | 
 |  | 4 | 4 | 4 | 4 |  |  
                    | |  | 2. Provision for decline in value of inventories | 
 |  |  |  |  |  |  |  
                    | |  | V. Other current assets | 
 |  | 3,009 | 2,624 | 2,495 | 2,369 | 2,355 |  
                    | |  | 1. Short-term prepaid expenses | 
 |  |  |  |  | 73 | 41 |  
                    | |  | 2. Deductible VAT | 
 |  | 1,924 | 1,539 | 1,385 | 979 | 920 |  
                    | |  | 3. Taxes and the State Receivables | 
 |  | 1,085 | 1,085 | 1,109 | 1,317 | 1,394 |  
                    | |  | 4. Repurchasing and reselling transactions in government bonds | 
 |  |  |  |  |  |  |  
                    | |  | 5. Other current assets | 
 |  |  |  |  |  |  |  
                    | |  | B. FIXED ASSETS AND LONG-TERM INVESTMENTS | 
 |  | 46,191 | 46,498 | 62,743 | 82,735 | 155,169 |  
                    | |  | 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 | 
 |  | 225 | 225 | 225 | 225 | 3,624 |  
                    | |  | 1. Tangible fixed assets | 
 |  | 225 | 225 | 225 | 225 | 3,624 |  
                    | |  | - Cost | 
 |  | 6,564 | 3,541 | 3,541 | 3,541 | 7,427 |  
                    | |  | - Accumulated depreciation | 
 |  | -6,339 | -3,317 | -3,317 | -3,317 | -3,802 |  
                    | |  | 2. Fixed assets of financial leasing | 
 |  |  |  |  |  |  |  
                    | |  | - Cost | 
 |  |  |  |  |  |  |  
                    | |  | - Accumulated depreciation | 
 |  |  |  |  |  |  |  
                    | |  | 3. Intangible fixed assets | 
 |  |  |  |  |  |  |  
                    | |  | - Cost | 
 |  |  |  |  |  |  |  
                    | |  | - Accumulated depreciation | 
 |  |  |  |  |  |  |  
                    | |  | III. Real Estate Investments | 
 |  |  |  |  |  |  |  
                    | |  | - Cost | 
 |  |  |  |  |  |  |  
                    | |  | - Accumulated depreciation | 
 |  |  |  |  |  |  |  
                    | |  | IV. Long-term assets in progress | 
 |  |  |  |  | 20,235 | 64,619 |  
                    | |  | 1. Costs of  long-term production, business in progress | 
 |  |  |  |  | 20,235 |  |  
                    | |  | 2. Costs of construction in progress | 
 |  |  |  |  |  | 64,619 |  
                    | |  | IV. Long-term financial investments | 
 |  | 27,453 | 28,358 | 45,202 | 45,557 | 70,290 |  
                    | |  | 1. Investment in subsidiaries | 
 |  |  |  |  |  |  |  
                    | |  | 2. Investments in associated companies, joint ventures | 
 |  | 41,746 | 41,746 | 41,746 | 41,746 | 41,746 |  
                    | |  | 3. Other investments in equity instruments | 
 |  | 14,409 | 14,341 | 14,341 | 14,341 | 34,802 |  
                    | |  | 4. Provision for diminution in value of financial long-term investments | 
 |  | -28,703 | -27,729 | -10,885 | -10,530 | -6,259 |  
                    | |  | 5. Investments holding until maturity | 
 |  |  |  |  |  |  |  
                    | |  | V. Total other long-term assets | 
 |  | 18,514 | 17,915 | 17,316 | 16,717 | 16,636 |  
                    | |  | 1. Long-term prepaid expenses | 
 |  | 18,514 | 17,915 | 17,316 | 16,717 | 16,636 |  
                    | |  | 2. Deferred income tax assets | 
 |  |  |  |  |  |  |  
                    | |  | 3. Other long-term assets | 
 |  |  |  |  |  |  |  
                    | |  | VI. Goodwills | 
 |  |  |  |  |  |  |  
                    | |  | TOTAL ASSETS | 
 |  | 204,488 | 198,090 | 211,313 | 193,793 | 191,614 |  
                    | |  | CAPITAL RESOURCES | 
 |  |  |  |  |  |  |  
                    | |  | A. LIABILITIES | 
 |  | 82,601 | 77,321 | 75,362 | 57,122 | 52,116 |  
                    | |  | I. Current liabilities | 
 |  | 79,411 | 74,199 | 70,399 | 52,159 | 47,153 |  
                    | |  | 1. Borrowings and short-term financial leased liabilities | 
 |  |  |  |  |  |  |  
                    | |  | 2. Long-term borrowings are due to pay | 
 |  |  |  |  |  |  |  
                    | |  | 3. Short-term payables to sellers | 
 |  | 31,652 | 23,818 | 23,472 | 22,323 | 17,835 |  
                    | |  | 4. Advances from customers | 
 |  | 243 | 269 | 269 | 299 | 279 |  
                    | |  | 5. Taxes and other payables to the State Budget | 
 |  | 6,056 | 5,071 | 4,143 | 2,304 | 2,305 |  
                    | |  | 6. Payables to employees | 
 |  | 1,037 | 1,284 | 758 | 619 | 875 |  
                    | |  | 7. Short-term accrued expenses | 
 |  | 29,340 | 29,340 | 29,340 | 17,792 | 17,064 |  
                    | |  | 8. Short-term intercompany payables | 
 |  |  |  |  |  |  |  
                    | |  | 9. Payables to the scheduled progress of construction contracts | 
 |  |  |  |  |  |  |  
                    | |  | 10. Short-term unrealized Revenue | 
 |  |  |  |  |  |  |  
                    | |  | 11. Other short-term payables | 
 |  | 11,082 | 14,418 | 12,418 | 8,822 | 8,795 |  
                    | |  | 12. Provision for short term payables | 
 |  |  |  |  |  |  |  
                    | |  | 13. Bonus and welfare fund | 
 |  |  |  |  |  |  |  
                    | |  | 14. Price stabilization fund | 
 |  |  |  |  |  |  |  
                    | |  | 15. Repurchasing and reselling transactions in government bonds | 
 |  |  |  |  |  |  |  
                    | |  | II. Long-term liabilities | 
 |  | 3,190 | 3,122 | 4,964 | 4,964 | 4,964 |  
                    | |  | 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 | 
 |  | 3,190 | 3,122 | 4,964 | 4,964 | 4,964 |  
                    | |  | 6. Borrowings and long-term financial leased liabilities | 
 |  |  |  |  |  |  |  
                    | |  | 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 | 
 |  |  |  |  |  |  |  
                    | |  | B. OWNER'S EQUITY | 
 |  | 121,887 | 120,769 | 135,951 | 136,671 | 139,497 |  
                    | |  | I. ShareHolder's equity | 
 |  | 121,887 | 120,769 | 135,951 | 136,671 | 139,497 |  
                    | |  | 1. Owner's investment capital | 
 |  | 106,000 | 106,000 | 106,000 | 106,000 | 106,000 |  
                    | |  | 2. Share capital surplus | 
 |  |  |  |  |  |  |  
                    | |  | 3. Bond conversion option | 
 |  |  |  |  |  |  |  
                    | |  | 4. Other owner's capital | 
 |  |  |  |  |  |  |  
                    | |  | 5. Treasury shares | 
 |  |  |  |  |  |  |  
                    | |  | 6. Differences upon asset revaluation | 
 |  |  |  |  |  |  |  
                    | |  | 7. Differences upon foreign exchange rate | 
 |  |  |  |  |  |  |  
                    | |  | 8. Investment and development funds | 
 |  | 13,065 | 13,065 | 13,065 | 13,065 | 13,065 |  
                    | |  | 9. Financial reserve funds | 
 |  |  |  |  |  |  |  
                    | |  | 10. Other funds belonging to owner's equity | 
 |  |  |  |  |  |  |  
                    | |  | 11. After tax undistributed profit | 
 |  | 2,822 | 1,704 | 16,886 | 17,606 | 20,433 |  
                    | |  | - After tax undistributed profit accumulated to the end of prior period | 
 |  | 4,301 | 2,822 | 1,704 | 20,469 | 22,023 |  
                    | |  | - Profit after tax undistributed this period | 
 |  | -1,478 | -1,118 | 15,182 | -2,863 | -1,591 |  
                    | |  | 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 | 
 |  | 204,488 | 198,090 | 211,313 | 193,793 | 191,614 |      
    There is no report. |  |