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                    |  |  | Q4 2020 | Q4 2021 | Q4 2022 | Q4 2023 | Q4 2024 |  
                    | |  | ASSETS | 
 |  |  |  |  |  |  |  
                    | |  | A. CURRENT ASSETS AND SHORT-TERM INVESTMENTS | 
 |  | 566,949 | 568,090 | 587,255 | 583,330 | 513,501 |  
                    | |  | I. Cash and cash equivalents | 
 |  | 78,489 | 82,288 | 84,499 | 75,191 | 41,358 |  
                    | |  | 1. Cash | 
 |  | 63,247 | 72,588 | 74,799 | 75,191 | 41,358 |  
                    | |  | 2. Cash equivalents | 
 |  | 15,242 | 9,700 | 9,700 |  |  |  
                    | |  | II. Short-term financial investments | 
 |  |  | 145 | 145 | 145 |  |  
                    | |  | 1. Trading securities | 
 |  |  |  |  |  |  |  
                    | |  | 2. Provision for diminution in value of trading securities | 
 |  |  |  |  |  |  |  
                    | |  | 3. Investments holding until maturity | 
 |  |  | 145 | 145 | 145 |  |  
                    | |  | III. Short-term receivables | 
 |  | 306,561 | 273,848 | 318,938 | 287,237 | 282,002 |  
                    | |  | 1.  Short-term receivables of customers | 
 |  | 95,700 | 129,945 | 144,734 | 94,238 | 102,860 |  
                    | |  | 2. Prepayments to suppliers | 
 |  | 26,478 | 29,761 | 29,027 | 35,596 | 42,451 |  
                    | |  | 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 | 
 |  | 185,197 | 114,956 | 145,991 | 158,218 | 137,505 |  
                    | |  | 7. Provision for doubtful short-term receivables | 
 |  | -814 | -814 | -814 | -814 | -814 |  
                    | |  | IV. Inventories | 
 |  | 163,341 | 199,694 | 174,133 | 208,530 | 179,231 |  
                    | |  | 1. Inventories | 
 |  | 163,341 | 199,694 | 174,133 | 208,530 | 179,231 |  
                    | |  | 2. Provision for decline in value of inventories | 
 |  |  |  |  |  |  |  
                    | |  | V. Other current assets | 
 |  | 18,558 | 12,114 | 9,541 | 12,226 | 10,911 |  
                    | |  | 1. Short-term prepaid expenses | 
 |  | 17 |  |  |  |  |  
                    | |  | 2. Deductible VAT | 
 |  | 12,132 | 8,959 | 9,541 | 12,226 | 10,911 |  
                    | |  | 3. Taxes and the State Receivables | 
 |  | 6,409 | 3,155 |  |  |  |  
                    | |  | 4. Repurchasing and reselling transactions in government bonds | 
 |  |  |  |  |  |  |  
                    | |  | 5. Other current assets | 
 |  |  |  |  |  |  |  
                    | |  | B. FIXED ASSETS AND LONG-TERM INVESTMENTS | 
 |  | 102,908 | 98,585 | 88,504 | 115,581 | 125,300 |  
                    | |  | I. Long-term receivables | 
 |  | 8,135 | 8,125 | 8,083 | 34,182 | 30,706 |  
                    | |  | 1. Long-term customer's receivables | 
 |  | 6,699 | 6,689 | 6,689 | 21,758 | 21,758 |  
                    | |  | 2. Business capital in the subsidiary units | 
 |  |  |  |  |  |  |  
                    | |  | 3. Internal long-term receivables | 
 |  |  |  |  |  |  |  
                    | |  | 4. Receivables on long-term loans | 
 |  |  |  |  |  |  |  
                    | |  | 5. Other long-term receivables | 
 |  | 1,436 | 1,436 | 1,394 | 12,424 | 8,948 |  
                    | |  | 6. Provision for doubtful long-term receivables | 
 |  |  |  |  |  |  |  
                    | |  | II. Fixed assets | 
 |  | 48,769 | 45,240 | 36,425 | 31,986 | 27,090 |  
                    | |  | 1. Tangible fixed assets | 
 |  | 48,769 | 45,240 | 36,425 | 30,986 | 26,090 |  
                    | |  | - Cost | 
 |  | 121,033 | 120,804 | 120,245 | 122,798 | 123,061 |  
                    | |  | - Accumulated depreciation | 
 |  | -72,264 | -75,564 | -83,820 | -91,812 | -96,971 |  
                    | |  | 2. Fixed assets of financial leasing | 
 |  |  |  |  |  |  |  
                    | |  | - Cost | 
 |  |  |  |  |  |  |  
                    | |  | - Accumulated depreciation | 
 |  |  |  |  |  |  |  
                    | |  | 3. Intangible fixed assets | 
 |  |  |  |  | 1,000 | 1,000 |  
                    | |  | - Cost | 
 |  |  |  |  | 1,000 | 1,000 |  
                    | |  | - Accumulated depreciation | 
 |  |  |  |  |  |  |  
                    | |  | III. Real Estate Investments | 
 |  |  |  |  |  |  |  
                    | |  | - Cost | 
 |  |  |  |  |  |  |  
                    | |  | - Accumulated depreciation | 
 |  |  |  |  |  |  |  
                    | |  | IV. Long-term assets in progress | 
 |  | 17,024 | 16,535 | 16,113 | 21,947 | 41,491 |  
                    | |  | 1. Costs of  long-term production, business in progress | 
 |  |  |  |  |  |  |  
                    | |  | 2. Costs of construction in progress | 
 |  | 17,024 | 16,535 | 16,113 | 21,947 | 41,491 |  
                    | |  | IV. Long-term financial investments | 
 |  |  | 1,000 | 1,000 | 1,000 |  |  
                    | |  | 1. Investment in subsidiaries | 
 |  |  |  |  | 1,000 |  |  
                    | |  | 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 | 
 |  |  | 1,000 | 1,000 |  |  |  
                    | |  | V. Total other long-term assets | 
 |  | 28,981 | 27,686 | 26,883 | 26,466 | 26,013 |  
                    | |  | 1. Long-term prepaid expenses | 
 |  | 28,981 | 27,686 | 26,883 | 26,466 | 26,013 |  
                    | |  | 2. Deferred income tax assets | 
 |  |  |  |  |  |  |  
                    | |  | 3. Other long-term assets | 
 |  |  |  |  |  |  |  
                    | |  | VI. Goodwills | 
 |  |  |  |  |  |  |  
                    | |  | TOTAL ASSETS | 
 |  | 669,857 | 666,675 | 675,759 | 698,910 | 638,801 |  
                    | |  | CAPITAL RESOURCES | 
 |  |  |  |  |  |  |  
                    | |  | A. LIABILITIES | 
 |  | 547,903 | 541,327 | 558,557 | 581,204 | 520,540 |  
                    | |  | I. Current liabilities | 
 |  | 527,175 | 518,748 | 546,440 | 574,473 | 514,263 |  
                    | |  | 1. Borrowings and short-term financial leased liabilities | 
 |  | 168,391 | 193,354 | 179,039 | 172,109 | 157,477 |  
                    | |  | 2. Long-term borrowings are due to pay | 
 |  |  |  |  |  |  |  
                    | |  | 3. Short-term payables to sellers | 
 |  | 88,123 | 108,322 | 92,951 | 95,837 | 101,090 |  
                    | |  | 4. Advances from customers | 
 |  | 211,726 | 143,991 | 151,826 | 182,963 | 110,415 |  
                    | |  | 5. Taxes and other payables to the State Budget | 
 |  | 2,141 | 3,126 | 4,364 | 5,656 | 7,654 |  
                    | |  | 6. Payables to employees | 
 |  | 6,439 | 4,138 | 6,759 | 6,888 | 6,371 |  
                    | |  | 7. Short-term accrued expenses | 
 |  | 3,892 | 6,962 | 12,530 | 24,379 | 16,027 |  
                    | |  | 8. Short-term intercompany payables | 
 |  |  |  |  |  |  |  
                    | |  | 9. Payables to the scheduled progress of construction contracts | 
 |  |  |  |  |  |  |  
                    | |  | 10. Short-term unrealized Revenue | 
 |  |  |  |  |  |  |  
                    | |  | 11. Other short-term payables | 
 |  | 44,839 | 57,776 | 97,211 | 85,439 | 113,394 |  
                    | |  | 12. Provision for short term payables | 
 |  |  |  |  |  |  |  
                    | |  | 13. Bonus and welfare fund | 
 |  | 1,624 | 1,080 | 1,760 | 1,202 | 1,835 |  
                    | |  | 14. Price stabilization fund | 
 |  |  |  |  |  |  |  
                    | |  | 15. Repurchasing and reselling transactions in government bonds | 
 |  |  |  |  |  |  |  
                    | |  | II. Long-term liabilities | 
 |  | 20,728 | 22,579 | 12,117 | 6,731 | 6,277 |  
                    | |  | 1. Long-term payables to sellers | 
 |  | 3,612 | 3,562 | 3,562 | 3,921 | 3,921 |  
                    | |  | 2. Long-term accrued expenses | 
 |  | 2,483 | 10,501 | 4,863 | 375 | 720 |  
                    | |  | 3. Intercompany payables on business capital | 
 |  |  |  |  |  |  |  
                    | |  | 4. Long-term intra-company payables | 
 |  |  |  |  |  |  |  
                    | |  | 5. Other long-term payables | 
 |  | 398 | 398 | 398 | 398 | 398 |  
                    | |  | 6. Borrowings and long-term financial leased liabilities | 
 |  | 14,235 | 8,118 | 3,294 | 2,037 | 1,237 |  
                    | |  | 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 | 
 |  | 121,955 | 125,348 | 117,202 | 117,706 | 118,262 |  
                    | |  | I. ShareHolder's equity | 
 |  | 121,955 | 125,348 | 117,202 | 117,706 | 118,262 |  
                    | |  | 1. Owner's investment capital | 
 |  | 80,000 | 80,000 | 87,998 | 87,998 | 87,998 |  
                    | |  | 2. Share capital surplus | 
 |  | 5,396 | 5,396 | 5,396 | 5,396 | 5,396 |  
                    | |  | 3. Bond conversion option | 
 |  |  |  |  |  |  |  
                    | |  | 4. Other owner's capital | 
 |  |  |  |  |  |  |  
                    | |  | 5. Treasury shares | 
 |  | -1 | -1 | -1 | -1 | -1 |  
                    | |  | 6. Differences upon asset revaluation | 
 |  |  |  |  |  |  |  
                    | |  | 7. Differences upon foreign exchange rate | 
 |  |  |  |  |  |  |  
                    | |  | 8. Investment and development funds | 
 |  | 27,242 | 27,242 | 19,244 | 19,244 | 19,244 |  
                    | |  | 9. Financial reserve funds | 
 |  |  |  |  |  |  |  
                    | |  | 10. Other funds belonging to owner's equity | 
 |  |  |  |  |  |  |  
                    | |  | 11. After tax undistributed profit | 
 |  | 6,790 | 10,176 | 2,662 | 4,054 | 4,609 |  
                    | |  | - After tax undistributed profit accumulated to the end of prior period | 
 |  | 3,402 | 5,971 | 6,600 | 2,662 | 3,042 |  
                    | |  | - Profit after tax undistributed this period | 
 |  | 3,388 | 4,206 | -3,939 | 1,393 | 1,567 |  
                    | |  | 12. Investment capital resource for basic construction | 
 |  |  |  |  |  |  |  
                    | |  | 13. Assistance fund for arrangement of enterprises | 
 |  |  |  |  |  |  |  
                    | |  | 14. interest of shareholders who not control | 
 |  | 2,527 | 2,534 | 1,903 | 1,014 | 1,014 |  
                    | |  | II. Funding resources and other funds | 
 |  |  |  |  |  |  |  
                    | |  | 1. Funding resources | 
 |  |  |  |  |  |  |  
                    | |  | 2. Funding resources that form fixed assets | 
 |  |  |  |  |  |  |  
                    | |  | 3. Retrenchment provision fund | 
 |  |  |  |  |  |  |  
                    | |  | TOTAL CAPITAL RESOURCES | 
 |  | 669,857 | 666,675 | 675,759 | 698,910 | 638,801 |      
    There is no report. |  |