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                    |  |  | Q4 2021 | Q1 2022 | Q4 2022 | Q4 2023 | Q4 2024 |  
                    | |  | ASSETS | 
 |  |  |  |  |  |  |  
                    | |  | A. CURRENT ASSETS AND SHORT-TERM INVESTMENTS | 
 |  | 305,738 | 304,879 | 249,016 | 426,870 | 524,450 |  
                    | |  | I. Cash and cash equivalents | 
 |  | 44,646 | 15,206 | 6,059 | 91,780 | 184,256 |  
                    | |  | 1. Cash | 
 |  | 44,646 | 15,206 | 6,059 | 91,780 | 179,256 |  
                    | |  | 2. Cash equivalents | 
 |  |  |  |  |  | 5,000 |  
                    | |  | II. Short-term financial investments | 
 |  | 9,600 | 12,118 | 12,971 | 33,897 | 12,947 |  
                    | |  | 1. Trading securities | 
 |  |  |  |  |  |  |  
                    | |  | 2. Provision for diminution in value of trading securities | 
 |  |  |  |  |  |  |  
                    | |  | 3. Investments holding until maturity | 
 |  | 9,600 | 12,118 | 12,971 | 33,897 | 12,947 |  
                    | |  | III. Short-term receivables | 
 |  | 117,983 | 117,129 | 111,225 | 144,565 | 213,342 |  
                    | |  | 1.  Short-term receivables of customers | 
 |  | 101,674 | 97,917 | 97,459 | 96,049 | 90,838 |  
                    | |  | 2. Prepayments to suppliers | 
 |  | 4,869 | 5,039 | 10,352 | 27,986 | 31,404 |  
                    | |  | 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 | 
 |  | 13,151 | 15,884 | 9,330 | 41,531 | 115,630 |  
                    | |  | 7. Provision for doubtful short-term receivables | 
 |  | -1,711 | -1,711 | -5,917 | -21,001 | -24,531 |  
                    | |  | IV. Inventories | 
 |  | 133,265 | 157,631 | 118,435 | 154,029 | 112,820 |  
                    | |  | 1. Inventories | 
 |  | 133,265 | 157,631 | 118,435 | 154,029 | 112,820 |  
                    | |  | 2. Provision for decline in value of inventories | 
 |  |  |  |  |  |  |  
                    | |  | V. Other current assets | 
 |  | 244 | 2,795 | 327 | 2,599 | 1,086 |  
                    | |  | 1. Short-term prepaid expenses | 
 |  |  | 2,795 |  |  |  |  
                    | |  | 2. Deductible VAT | 
 |  | 244 |  | 327 | 2,599 | 1,086 |  
                    | |  | 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 | 
 |  | 17,510 | 23,527 | 23,888 | 37,967 | 40,476 |  
                    | |  | I. Long-term receivables | 
 |  |  |  |  |  | 370 |  
                    | |  | 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 | 
 |  |  |  |  |  | 370 |  
                    | |  | 6. Provision for doubtful long-term receivables | 
 |  |  |  |  |  |  |  
                    | |  | II. Fixed assets | 
 |  | 15,299 | 14,734 | 12,002 | 25,734 | 25,311 |  
                    | |  | 1. Tangible fixed assets | 
 |  | 15,299 | 14,734 | 12,002 | 18,332 | 19,522 |  
                    | |  | - Cost | 
 |  | 120,601 | 120,601 | 120,601 | 129,011 | 114,662 |  
                    | |  | - Accumulated depreciation | 
 |  | -105,303 | -105,868 | -108,599 | -110,679 | -95,141 |  
                    | |  | 2. Fixed assets of financial leasing | 
 |  |  |  |  | 7,402 | 5,789 |  
                    | |  | - Cost | 
 |  |  |  |  | 7,658 | 6,854 |  
                    | |  | - Accumulated depreciation | 
 |  |  |  |  | -256 | -1,066 |  
                    | |  | 3. Intangible fixed assets | 
 |  |  |  |  |  |  |  
                    | |  | - Cost | 
 |  |  |  |  |  |  |  
                    | |  | - Accumulated depreciation | 
 |  |  |  |  |  |  |  
                    | |  | III. Real Estate Investments | 
 |  |  |  |  |  |  |  
                    | |  | - Cost | 
 |  |  |  |  |  |  |  
                    | |  | - Accumulated depreciation | 
 |  |  |  |  |  |  |  
                    | |  | IV. Long-term assets in progress | 
 |  |  |  |  |  |  |  
                    | |  | 1. Costs of  long-term production, business in progress | 
 |  |  |  |  |  |  |  
                    | |  | 2. Costs of construction in progress | 
 |  |  |  |  |  |  |  
                    | |  | 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 | 
 |  | 2,211 | 8,793 | 11,886 | 12,233 | 14,795 |  
                    | |  | 1. Long-term prepaid expenses | 
 |  | 1,998 | 8,579 | 11,886 | 12,233 | 14,043 |  
                    | |  | 2. Deferred income tax assets | 
 |  | 213 | 213 |  |  | 751 |  
                    | |  | 3. Other long-term assets | 
 |  |  |  |  |  |  |  
                    | |  | VI. Goodwills | 
 |  |  |  |  |  |  |  
                    | |  | TOTAL ASSETS | 
 |  | 323,248 | 328,406 | 272,905 | 464,837 | 564,926 |  
                    | |  | CAPITAL RESOURCES | 
 |  |  |  |  |  |  |  
                    | |  | A. LIABILITIES | 
 |  | 261,636 | 266,657 | 211,253 | 403,006 | 502,286 |  
                    | |  | I. Current liabilities | 
 |  | 259,400 | 264,422 | 209,017 | 392,580 | 492,870 |  
                    | |  | 1. Borrowings and short-term financial leased liabilities | 
 |  | 84,694 | 79,574 | 66,436 | 89,382 | 97,237 |  
                    | |  | 2. Long-term borrowings are due to pay | 
 |  |  |  |  |  |  |  
                    | |  | 3. Short-term payables to sellers | 
 |  | 63,482 | 66,697 | 64,094 | 51,289 | 66,083 |  
                    | |  | 4. Advances from customers | 
 |  | 83,031 | 95,506 | 42,567 | 221,754 | 304,845 |  
                    | |  | 5. Taxes and other payables to the State Budget | 
 |  | 19 | 19 | 332 | 266 | 272 |  
                    | |  | 6. Payables to employees | 
 |  | 908 | 765 | 840 | 6,103 | 6,246 |  
                    | |  | 7. Short-term accrued expenses | 
 |  | 4,822 | 4,164 | 13,541 | 12,323 | 11,846 |  
                    | |  | 8. Short-term intercompany payables | 
 |  |  |  |  |  |  |  
                    | |  | 9. Payables to the scheduled progress of construction contracts | 
 |  |  |  |  |  |  |  
                    | |  | 10. Short-term unrealized Revenue | 
 |  |  |  |  |  |  |  
                    | |  | 11. Other short-term payables | 
 |  | 21,361 | 16,616 | 20,124 | 10,380 | 5,332 |  
                    | |  | 12. Provision for short term payables | 
 |  |  |  |  |  |  |  
                    | |  | 13. Bonus and welfare fund | 
 |  | 1,083 | 1,083 | 1,083 | 1,083 | 1,010 |  
                    | |  | 14. Price stabilization fund | 
 |  |  |  |  |  |  |  
                    | |  | 15. Repurchasing and reselling transactions in government bonds | 
 |  |  |  |  |  |  |  
                    | |  | II. Long-term liabilities | 
 |  | 2,236 | 2,236 | 2,236 | 10,426 | 9,416 |  
                    | |  | 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 | 
 |  |  |  |  | 9,595 | 8,585 |  
                    | |  | 7. Convertible bonds | 
 |  |  |  |  |  |  |  
                    | |  | 8. Deferred income tax payables | 
 |  |  |  |  |  |  |  
                    | |  | 9. Provision for job loss allowance | 
 |  |  |  |  |  |  |  
                    | |  | 10. Provision for long-term payables | 
 |  | 2,236 | 2,236 | 2,236 | 831 | 831 |  
                    | |  | 11. Long-term unrealized revenue | 
 |  |  |  |  |  |  |  
                    | |  | 12. Development fund of science and technology | 
 |  |  |  |  |  |  |  
                    | |  | B. OWNER'S EQUITY | 
 |  | 61,613 | 61,748 | 61,652 | 61,830 | 62,640 |  
                    | |  | I. ShareHolder's equity | 
 |  | 61,613 | 61,748 | 61,652 | 61,830 | 62,640 |  
                    | |  | 1. Owner's investment capital | 
 |  | 53,129 | 53,129 | 53,129 | 53,129 | 53,129 |  
                    | |  | 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 | 
 |  | 1,655 | 1,655 | 1,655 | 1,655 | 1,655 |  
                    | |  | 9. Financial reserve funds | 
 |  |  |  |  |  |  |  
                    | |  | 10. Other funds belonging to owner's equity | 
 |  |  |  |  |  |  |  
                    | |  | 11. After tax undistributed profit | 
 |  | 6,828 | 6,964 | 6,868 | 7,046 | 7,856 |  
                    | |  | - After tax undistributed profit accumulated to the end of prior period | 
 |  | 5,795 | 6,828 | 6,828 | 6,868 | 7,046 |  
                    | |  | - Profit after tax undistributed this period | 
 |  | 1,033 | 136 | 39 | 178 | 810 |  
                    | |  | 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 | 
 |  | 323,248 | 328,406 | 272,905 | 464,837 | 564,926 |      
    There is no report. |  |