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                    |  |  | Q4 2020 | Q4 2021 | Q4 2022 | Q4 2023 | Q4 2024 |  
                    | |  | ASSETS | 
 |  |  |  |  |  |  |  
                    | |  | A. CURRENT ASSETS AND SHORT-TERM INVESTMENTS | 
 |  | 140,091 | 141,094 | 149,483 | 99,961 | 110,968 |  
                    | |  | I. Cash and cash equivalents | 
 |  | 51,077 | 39,348 | 31,149 | 12,093 | 19,155 |  
                    | |  | 1. Cash | 
 |  | 51,077 | 39,348 | 21,149 | 6,593 | 10,370 |  
                    | |  | 2. Cash equivalents | 
 |  |  |  | 10,000 | 5,500 | 8,785 |  
                    | |  | II. Short-term financial investments | 
 |  | 10,172 | 30,800 | 35,400 | 22,927 | 20,020 |  
                    | |  | 1. Trading securities | 
 |  |  |  |  |  |  |  
                    | |  | 2. Provision for diminution in value of trading securities | 
 |  |  |  |  |  |  |  
                    | |  | 3. Investments holding until maturity | 
 |  | 10,172 | 30,800 | 35,400 | 22,927 | 20,020 |  
                    | |  | III. Short-term receivables | 
 |  | 37,229 | 22,726 | 30,055 | 28,979 | 20,608 |  
                    | |  | 1.  Short-term receivables of customers | 
 |  | 35,622 | 21,696 | 28,588 | 28,148 | 19,812 |  
                    | |  | 2. Prepayments to suppliers | 
 |  | 399 | 183 | 1,004 | 473 | 288 |  
                    | |  | 3. Short-term intercompany receivables | 
 |  |  |  |  |  | 508 |  
                    | |  | 4. Receivables according to the progress of construction contracts | 
 |  |  |  |  |  |  |  
                    | |  | 5. Receivables on short-term loans | 
 |  |  |  |  |  |  |  
                    | |  | 6. Other short-term receivables | 
 |  | 1,208 | 846 | 463 | 358 |  |  
                    | |  | 7. Provision for doubtful short-term receivables | 
 |  |  |  |  |  |  |  
                    | |  | IV. Inventories | 
 |  | 36,386 | 44,341 | 47,909 | 34,201 | 45,157 |  
                    | |  | 1. Inventories | 
 |  | 36,386 | 44,341 | 47,909 | 34,414 | 45,157 |  
                    | |  | 2. Provision for decline in value of inventories | 
 |  |  |  |  | -213 |  |  
                    | |  | V. Other current assets | 
 |  | 5,227 | 3,880 | 4,969 | 1,761 | 6,028 |  
                    | |  | 1. Short-term prepaid expenses | 
 |  | 185 | 98 | 31 | 155 | 48 |  
                    | |  | 2. Deductible VAT | 
 |  | 5,042 | 3,758 | 4,938 | 1,606 | 5,980 |  
                    | |  | 3. Taxes and the State Receivables | 
 |  |  | 24 |  |  |  |  
                    | |  | 4. Repurchasing and reselling transactions in government bonds | 
 |  |  |  |  |  |  |  
                    | |  | 5. Other current assets | 
 |  |  |  |  |  |  |  
                    | |  | B. FIXED ASSETS AND LONG-TERM INVESTMENTS | 
 |  | 27,681 | 28,341 | 24,244 | 70,559 | 67,499 |  
                    | |  | I. Long-term receivables | 
 |  | 844 | 876 | 398 | 388 | 388 |  
                    | |  | 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 | 
 |  | 844 | 876 | 398 | 388 | 388 |  
                    | |  | 6. Provision for doubtful long-term receivables | 
 |  |  |  |  |  |  |  
                    | |  | II. Fixed assets | 
 |  | 22,133 | 18,526 | 15,722 | 30,679 | 28,743 |  
                    | |  | 1. Tangible fixed assets | 
 |  | 11,106 | 7,860 | 5,418 | 20,736 | 19,162 |  
                    | |  | - Cost | 
 |  | 89,548 | 89,132 | 87,940 | 105,776 | 91,291 |  
                    | |  | - Accumulated depreciation | 
 |  | -78,442 | -81,272 | -82,521 | -85,040 | -72,129 |  
                    | |  | 2. Fixed assets of financial leasing | 
 |  |  |  |  |  |  |  
                    | |  | - Cost | 
 |  |  |  |  |  |  |  
                    | |  | - Accumulated depreciation | 
 |  |  |  |  |  |  |  
                    | |  | 3. Intangible fixed assets | 
 |  | 11,027 | 10,666 | 10,304 | 9,942 | 9,581 |  
                    | |  | - Cost | 
 |  | 17,777 | 17,777 | 17,777 | 17,777 | 17,777 |  
                    | |  | - Accumulated depreciation | 
 |  | -6,750 | -7,111 | -7,473 | -7,835 | -8,196 |  
                    | |  | III. Real Estate Investments | 
 |  |  |  |  |  |  |  
                    | |  | - Cost | 
 |  |  |  |  |  |  |  
                    | |  | - Accumulated depreciation | 
 |  |  |  |  |  |  |  
                    | |  | IV. Long-term assets in progress | 
 |  |  | 6,654 | 6,676 | 15,658 | 15,584 |  
                    | |  | 1. Costs of  long-term production, business in progress | 
 |  |  |  |  |  |  |  
                    | |  | 2. Costs of construction in progress | 
 |  |  | 6,654 | 6,676 | 15,658 | 15,584 |  
                    | |  | IV. Long-term financial investments | 
 |  | 700 | 700 | 700 | 687 | 623 |  
                    | |  | 1. Investment in subsidiaries | 
 |  |  |  |  |  |  |  
                    | |  | 2. Investments in associated companies, joint ventures | 
 |  |  |  |  |  |  |  
                    | |  | 3. Other investments in equity instruments | 
 |  | 700 | 700 | 700 | 700 | 700 |  
                    | |  | 4. Provision for diminution in value of financial long-term investments | 
 |  |  |  |  | -13 | -77 |  
                    | |  | 5. Investments holding until maturity | 
 |  |  |  |  |  |  |  
                    | |  | V. Total other long-term assets | 
 |  | 4,004 | 1,585 | 748 | 23,148 | 22,160 |  
                    | |  | 1. Long-term prepaid expenses | 
 |  | 4,004 | 1,585 | 748 | 23,148 | 22,160 |  
                    | |  | 2. Deferred income tax assets | 
 |  |  |  |  |  |  |  
                    | |  | 3. Other long-term assets | 
 |  |  |  |  |  |  |  
                    | |  | VI. Goodwills | 
 |  |  |  |  |  |  |  
                    | |  | TOTAL ASSETS | 
 |  | 167,773 | 169,434 | 173,727 | 170,520 | 178,467 |  
                    | |  | CAPITAL RESOURCES | 
 |  |  |  |  |  |  |  
                    | |  | A. LIABILITIES | 
 |  | 73,402 | 68,287 | 66,208 | 59,416 | 63,443 |  
                    | |  | I. Current liabilities | 
 |  | 73,191 | 67,751 | 64,008 | 57,216 | 61,243 |  
                    | |  | 1. Borrowings and short-term financial leased liabilities | 
 |  |  |  |  | 1,289 |  |  
                    | |  | 2. Long-term borrowings are due to pay | 
 |  |  |  |  |  |  |  
                    | |  | 3. Short-term payables to sellers | 
 |  | 21,508 | 28,491 | 13,597 | 20,091 | 22,654 |  
                    | |  | 4. Advances from customers | 
 |  | 1,719 | 2,079 | 10,861 | 2,919 | 3,290 |  
                    | |  | 5. Taxes and other payables to the State Budget | 
 |  | 1,391 | 2,290 | 1,541 | 1,283 | 824 |  
                    | |  | 6. Payables to employees | 
 |  | 34,054 | 28,745 | 31,662 | 25,075 | 27,484 |  
                    | |  | 7. Short-term accrued expenses | 
 |  | 612 | 1,272 | 1,438 | 1,045 | 869 |  
                    | |  | 8. Short-term intercompany payables | 
 |  |  |  |  |  |  |  
                    | |  | 9. Payables to the scheduled progress of construction contracts | 
 |  |  |  |  |  |  |  
                    | |  | 10. Short-term unrealized Revenue | 
 |  |  |  |  |  |  |  
                    | |  | 11. Other short-term payables | 
 |  | 10,866 | 3,041 | 3,553 | 3,588 | 4,261 |  
                    | |  | 12. Provision for short term payables | 
 |  |  |  |  |  |  |  
                    | |  | 13. Bonus and welfare fund | 
 |  | 3,042 | 1,833 | 1,357 | 1,926 | 1,860 |  
                    | |  | 14. Price stabilization fund | 
 |  |  |  |  |  |  |  
                    | |  | 15. Repurchasing and reselling transactions in government bonds | 
 |  |  |  |  |  |  |  
                    | |  | II. Long-term liabilities | 
 |  | 211 | 536 | 2,200 | 2,200 | 2,200 |  
                    | |  | 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 | 
 |  | 211 | 536 | 2,200 | 2,200 | 2,200 |  
                    | |  | 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 | 
 |  | 94,371 | 101,147 | 107,519 | 111,104 | 115,024 |  
                    | |  | I. ShareHolder's equity | 
 |  | 94,371 | 101,147 | 107,519 | 111,104 | 115,024 |  
                    | |  | 1. Owner's investment capital | 
 |  | 52,920 | 52,920 | 52,920 | 52,920 | 52,920 |  
                    | |  | 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 | 
 |  | 38,511 | 41,451 | 42,258 | 45,427 | 48,970 |  
                    | |  | 9. Financial reserve funds | 
 |  |  |  |  |  |  |  
                    | |  | 10. Other funds belonging to owner's equity | 
 |  |  |  |  |  |  |  
                    | |  | 11. After tax undistributed profit | 
 |  | 2,940 | 6,776 | 12,341 | 12,757 | 13,133 |  
                    | |  | - After tax undistributed profit accumulated to the end of prior period | 
 |  |  |  |  |  |  |  
                    | |  | - Profit after tax undistributed this period | 
 |  |  | 6,776 | 12,341 | 12,757 | 13,133 |  
                    | |  | 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 | 
 |  | 167,773 | 169,434 | 173,727 | 170,520 | 178,467 |      
    There is no report. |  |