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                    |  |  | Q4 2020 | Q4 2021 | Q4 2022 | Q4 2023 | Q4 2024 |  
                    | |  | ASSETS | 
 |  |  |  |  |  |  |  
                    | |  | A. CURRENT ASSETS AND SHORT-TERM INVESTMENTS | 
 |  | 48,138 | 49,645 | 47,942 | 46,392 | 39,691 |  
                    | |  | I. Cash and cash equivalents | 
 |  | 1,056 | 2,610 | 3,539 | 5,162 | 4,765 |  
                    | |  | 1. Cash | 
 |  | 1,056 | 2,610 | 3,539 | 5,162 | 4,765 |  
                    | |  | 2. Cash equivalents | 
 |  |  |  |  |  |  |  
                    | |  | II. Short-term financial investments | 
 |  | 300 | 860 | 370 | 540 | 510 |  
                    | |  | 1. Trading securities | 
 |  | 1,000 | 1,000 | 1,000 | 1,000 | 1,000 |  
                    | |  | 2. Provision for diminution in value of trading securities | 
 |  | -700 | -140 | -630 | -460 | -490 |  
                    | |  | 3. Investments holding until maturity | 
 |  |  |  |  |  |  |  
                    | |  | III. Short-term receivables | 
 |  | 40,388 | 39,450 | 38,612 | 35,440 | 28,789 |  
                    | |  | 1.  Short-term receivables of customers | 
 |  | 53,673 | 52,091 | 52,462 | 49,265 | 42,472 |  
                    | |  | 2. Prepayments to suppliers | 
 |  | 359 | 670 | 438 | 435 | 299 |  
                    | |  | 3. Short-term intercompany receivables | 
 |  |  |  |  |  |  |  
                    | |  | 4. Receivables according to the progress of construction contracts | 
 |  |  |  |  |  |  |  
                    | |  | 5. Receivables on short-term loans | 
 |  | 1,100 | 1,100 |  |  |  |  
                    | |  | 6. Other short-term receivables | 
 |  | 2,227 | 2,560 | 2,684 | 2,334 | 2,407 |  
                    | |  | 7. Provision for doubtful short-term receivables | 
 |  | -16,972 | -16,972 | -16,972 | -16,594 | -16,388 |  
                    | |  | IV. Inventories | 
 |  | 5,981 | 6,524 | 5,046 | 4,891 | 5,422 |  
                    | |  | 1. Inventories | 
 |  | 5,981 | 6,540 | 5,062 | 4,906 | 5,437 |  
                    | |  | 2. Provision for decline in value of inventories | 
 |  |  | -16 | -16 | -16 | -16 |  
                    | |  | V. Other current assets | 
 |  | 413 | 201 | 375 | 359 | 206 |  
                    | |  | 1. Short-term prepaid expenses | 
 |  | 398 | 194 | 284 | 93 | 199 |  
                    | |  | 2. Deductible VAT | 
 |  | 14 |  | 3 | 111 |  |  
                    | |  | 3. Taxes and the State Receivables | 
 |  |  | 7 | 89 | 155 | 7 |  
                    | |  | 4. Repurchasing and reselling transactions in government bonds | 
 |  |  |  |  |  |  |  
                    | |  | 5. Other current assets | 
 |  |  |  |  |  |  |  
                    | |  | B. FIXED ASSETS AND LONG-TERM INVESTMENTS | 
 |  | 10,750 | 9,456 | 8,441 | 7,300 | 6,319 |  
                    | |  | I. Long-term receivables | 
 |  | 195 | 195 | 195 | 195 | 345 |  
                    | |  | 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 | 
 |  | 195 | 195 | 195 | 195 | 345 |  
                    | |  | 6. Provision for doubtful long-term receivables | 
 |  |  |  |  |  |  |  
                    | |  | II. Fixed assets | 
 |  | 3,493 | 3,876 | 4,223 | 3,655 | 2,378 |  
                    | |  | 1. Tangible fixed assets | 
 |  | 3,493 | 3,876 | 4,223 | 3,655 | 2,378 |  
                    | |  | - Cost | 
 |  | 75,934 | 76,679 | 77,641 | 77,834 | 74,223 |  
                    | |  | - Accumulated depreciation | 
 |  | -72,441 | -72,803 | -73,418 | -74,179 | -71,844 |  
                    | |  | 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 | 
 |  |  | 4 | 660 | 618 | 637 |  
                    | |  | 1. Costs of  long-term production, business in progress | 
 |  |  |  |  |  |  |  
                    | |  | 2. Costs of construction in progress | 
 |  |  | 4 | 660 | 618 | 637 |  
                    | |  | 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 | 
 |  | 7,061 | 5,380 | 3,363 | 2,832 | 2,959 |  
                    | |  | 1. Long-term prepaid expenses | 
 |  | 2,826 | 2,043 | 872 | 1,129 | 1,988 |  
                    | |  | 2. Deferred income tax assets | 
 |  | 4,235 | 3,337 | 2,490 | 1,703 | 970 |  
                    | |  | 3. Other long-term assets | 
 |  |  |  |  |  |  |  
                    | |  | VI. Goodwills | 
 |  |  |  |  |  |  |  
                    | |  | TOTAL ASSETS | 
 |  | 58,887 | 59,101 | 56,384 | 53,692 | 46,011 |  
                    | |  | CAPITAL RESOURCES | 
 |  |  |  |  |  |  |  
                    | |  | A. LIABILITIES | 
 |  | 66,314 | 66,638 | 66,439 | 66,884 | 59,977 |  
                    | |  | I. Current liabilities | 
 |  | 66,233 | 66,571 | 66,372 | 66,847 | 59,910 |  
                    | |  | 1. Borrowings and short-term financial leased liabilities | 
 |  | 46,100 | 45,700 | 43,100 | 40,436 | 33,208 |  
                    | |  | 2. Long-term borrowings are due to pay | 
 |  |  |  |  |  |  |  
                    | |  | 3. Short-term payables to sellers | 
 |  | 11,696 | 10,824 | 10,989 | 11,439 | 9,093 |  
                    | |  | 4. Advances from customers | 
 |  | 25 | 25 | 24 | 24 | 24 |  
                    | |  | 5. Taxes and other payables to the State Budget | 
 |  | 472 | 449 | 364 | 368 | 177 |  
                    | |  | 6. Payables to employees | 
 |  | 625 | 509 | 572 | 539 | 811 |  
                    | |  | 7. Short-term accrued expenses | 
 |  | 8,128 | 9,683 | 11,713 | 14,520 | 17,120 |  
                    | |  | 8. Short-term intercompany payables | 
 |  |  |  |  |  |  |  
                    | |  | 9. Payables to the scheduled progress of construction contracts | 
 |  |  |  |  |  |  |  
                    | |  | 10. Short-term unrealized Revenue | 
 |  |  |  |  |  |  |  
                    | |  | 11. Other short-term payables | 
 |  | 1,032 | 1,226 | 1,455 | 1,364 | 1,320 |  
                    | |  | 12. Provision for short term payables | 
 |  |  |  |  |  |  |  
                    | |  | 13. Bonus and welfare fund | 
 |  | -1,844 | -1,844 | -1,844 | -1,844 | -1,844 |  
                    | |  | 14. Price stabilization fund | 
 |  |  |  |  |  |  |  
                    | |  | 15. Repurchasing and reselling transactions in government bonds | 
 |  |  |  |  |  |  |  
                    | |  | II. Long-term liabilities | 
 |  | 81 | 67 | 67 | 37 | 67 |  
                    | |  | 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 | 
 |  | 81 | 67 | 67 | 37 | 67 |  
                    | |  | 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 | 
 |  | -7,427 | -7,537 | -10,055 | -13,192 | -13,966 |  
                    | |  | I. ShareHolder's equity | 
 |  | -7,427 | -7,537 | -10,055 | -13,192 | -13,966 |  
                    | |  | 1. Owner's investment capital | 
 |  | 45,000 | 45,000 | 45,000 | 45,000 | 45,000 |  
                    | |  | 2. Share capital surplus | 
 |  | -7 | -7 | -7 | -7 | -7 |  
                    | |  | 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 | 
 |  | 14,322 | 14,322 | 14,322 | 14,322 | 14,322 |  
                    | |  | 9. Financial reserve funds | 
 |  |  |  |  |  |  |  
                    | |  | 10. Other funds belonging to owner's equity | 
 |  |  |  |  |  |  |  
                    | |  | 11. After tax undistributed profit | 
 |  | -66,742 | -66,852 | -69,369 | -72,507 | -73,281 |  
                    | |  | - After tax undistributed profit accumulated to the end of prior period | 
 |  | -64,701 | -66,742 | -66,852 | -69,369 | -72,507 |  
                    | |  | - Profit after tax undistributed this period | 
 |  | -2,041 | -110 | -2,518 | -3,137 | -774 |  
                    | |  | 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 | 
 |  | 58,887 | 59,101 | 56,384 | 53,692 | 46,011 |      
    There is no report. |  |