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                    |  |  | Q4 2020 | Q4 2021 | Q4 2022 | Q4 2023 | Q4 2024 |  
                    | |  | ASSETS | 
 |  |  |  |  |  |  |  
                    | |  | A. CURRENT ASSETS AND SHORT-TERM INVESTMENTS | 
 |  | 263,159 | 275,719 | 315,282 | 342,608 | 387,207 |  
                    | |  | I. Cash and cash equivalents | 
 |  | 37,253 | 28,382 | 20,736 | 39,550 | 57,695 |  
                    | |  | 1. Cash | 
 |  | 37,253 | 28,382 | 20,736 | 39,550 | 57,695 |  
                    | |  | 2. Cash equivalents | 
 |  |  |  |  |  |  |  
                    | |  | II. Short-term financial investments | 
 |  | 2 | 10,002 | 2 | 2 | 20,002 |  
                    | |  | 1. Trading securities | 
 |  | 2 | 2 | 2 | 2 | 2 |  
                    | |  | 2. Provision for diminution in value of trading securities | 
 |  |  |  |  |  |  |  
                    | |  | 3. Investments holding until maturity | 
 |  |  | 10,000 |  |  | 20,000 |  
                    | |  | III. Short-term receivables | 
 |  | 125,153 | 168,997 | 171,784 | 197,512 | 213,874 |  
                    | |  | 1.  Short-term receivables of customers | 
 |  | 89,181 | 114,438 | 131,124 | 154,145 | 159,904 |  
                    | |  | 2. Prepayments to suppliers | 
 |  | 46,738 | 61,961 | 39,303 | 39,296 | 51,809 |  
                    | |  | 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 | 
 |  | 11,343 | 13,538 | 13,446 | 15,910 | 14,008 |  
                    | |  | 7. Provision for doubtful short-term receivables | 
 |  | -22,110 | -20,940 | -12,089 | -11,839 | -11,846 |  
                    | |  | IV. Inventories | 
 |  | 89,671 | 58,574 | 100,320 | 86,882 | 84,147 |  
                    | |  | 1. Inventories | 
 |  | 89,671 | 58,574 | 100,320 | 86,882 | 84,147 |  
                    | |  | 2. Provision for decline in value of inventories | 
 |  |  |  |  |  |  |  
                    | |  | V. Other current assets | 
 |  | 11,080 | 9,764 | 22,439 | 18,663 | 11,489 |  
                    | |  | 1. Short-term prepaid expenses | 
 |  | 10,131 | 9,641 | 15,924 | 18,584 | 11,358 |  
                    | |  | 2. Deductible VAT | 
 |  | 828 |  | 6,492 | 24 | 130 |  
                    | |  | 3. Taxes and the State Receivables | 
 |  | 121 | 123 | 24 | 54 |  |  
                    | |  | 4. Repurchasing and reselling transactions in government bonds | 
 |  |  |  |  |  |  |  
                    | |  | 5. Other current assets | 
 |  |  |  |  |  |  |  
                    | |  | B. FIXED ASSETS AND LONG-TERM INVESTMENTS | 
 |  | 310,638 | 360,420 | 417,104 | 427,877 | 374,758 |  
                    | |  | I. Long-term receivables | 
 |  | 1,050 | 6,050 | 6,250 | 6,050 | 6,050 |  
                    | |  | 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 | 
 |  | 1,050 | 6,050 | 6,250 | 6,050 | 6,050 |  
                    | |  | 6. Provision for doubtful long-term receivables | 
 |  |  |  |  |  |  |  
                    | |  | II. Fixed assets | 
 |  | 278,166 | 285,098 | 342,186 | 310,462 | 283,257 |  
                    | |  | 1. Tangible fixed assets | 
 |  | 246,869 | 254,660 | 312,608 | 281,743 | 255,397 |  
                    | |  | - Cost | 
 |  | 393,623 | 437,066 | 536,783 | 552,102 | 563,054 |  
                    | |  | - Accumulated depreciation | 
 |  | -146,755 | -182,406 | -224,175 | -270,359 | -307,657 |  
                    | |  | 2. Fixed assets of financial leasing | 
 |  |  |  |  |  |  |  
                    | |  | - Cost | 
 |  |  |  |  |  |  |  
                    | |  | - Accumulated depreciation | 
 |  |  |  |  |  |  |  
                    | |  | 3. Intangible fixed assets | 
 |  | 31,297 | 30,438 | 29,579 | 28,719 | 27,860 |  
                    | |  | - Cost | 
 |  | 38,294 | 38,294 | 38,294 | 38,294 | 38,294 |  
                    | |  | - Accumulated depreciation | 
 |  | -6,996 | -7,856 | -8,715 | -9,574 | -10,434 |  
                    | |  | III. Real Estate Investments | 
 |  |  |  |  |  |  |  
                    | |  | - Cost | 
 |  |  |  |  |  |  |  
                    | |  | - Accumulated depreciation | 
 |  |  |  |  |  |  |  
                    | |  | IV. Long-term assets in progress | 
 |  | 13,586 | 14,616 | 16,033 | 17,354 | 16,489 |  
                    | |  | 1. Costs of  long-term production, business in progress | 
 |  |  |  |  |  |  |  
                    | |  | 2. Costs of construction in progress | 
 |  | 13,586 | 14,616 | 16,033 | 17,354 | 16,489 |  
                    | |  | IV. Long-term financial investments | 
 |  |  | 40,770 | 40,770 | 82,770 | 62,770 |  
                    | |  | 1. Investment in subsidiaries | 
 |  |  |  |  |  |  |  
                    | |  | 2. Investments in associated companies, joint ventures | 
 |  | 5,348 | 5,348 | 5,348 | 5,348 | 5,348 |  
                    | |  | 3. Other investments in equity instruments | 
 |  | 2,178 | 2,178 | 2,178 | 2,178 | 2,178 |  
                    | |  | 4. Provision for diminution in value of financial long-term investments | 
 |  | -7,526 | -7,526 | -7,526 | -7,526 | -7,526 |  
                    | |  | 5. Investments holding until maturity | 
 |  |  | 40,770 | 40,770 | 82,770 | 62,770 |  
                    | |  | V. Total other long-term assets | 
 |  | 17,836 | 13,885 | 11,864 | 11,241 | 6,192 |  
                    | |  | 1. Long-term prepaid expenses | 
 |  | 13,164 | 9,111 | 6,980 | 6,334 | 6,192 |  
                    | |  | 2. Deferred income tax assets | 
 |  | 4,672 | 4,774 | 4,884 | 4,907 |  |  
                    | |  | 3. Other long-term assets | 
 |  |  |  |  |  |  |  
                    | |  | VI. Goodwills | 
 |  |  |  |  |  |  |  
                    | |  | TOTAL ASSETS | 
 |  | 573,797 | 636,139 | 732,385 | 770,485 | 761,965 |  
                    | |  | CAPITAL RESOURCES | 
 |  |  |  |  |  |  |  
                    | |  | A. LIABILITIES | 
 |  | 213,679 | 247,420 | 309,402 | 297,173 | 250,903 |  
                    | |  | I. Current liabilities | 
 |  | 152,751 | 100,692 | 116,365 | 138,061 | 88,903 |  
                    | |  | 1. Borrowings and short-term financial leased liabilities | 
 |  | 110,897 | 55,789 | 61,598 | 97,143 | 56,129 |  
                    | |  | 2. Long-term borrowings are due to pay | 
 |  |  |  |  |  |  |  
                    | |  | 3. Short-term payables to sellers | 
 |  | 19,647 | 22,654 | 30,495 | 21,507 | 11,603 |  
                    | |  | 4. Advances from customers | 
 |  | 9,449 | 7,556 | 6,539 | 4,013 | 4,607 |  
                    | |  | 5. Taxes and other payables to the State Budget | 
 |  | 3,059 | 4,745 | 2,907 | 2,902 | 4,054 |  
                    | |  | 6. Payables to employees | 
 |  | 6,024 | 8,243 | 5,912 | 6,022 | 9,866 |  
                    | |  | 7. Short-term accrued expenses | 
 |  | 740 | 213 | 1,169 | 1,076 | 402 |  
                    | |  | 8. Short-term intercompany payables | 
 |  |  |  |  |  |  |  
                    | |  | 9. Payables to the scheduled progress of construction contracts | 
 |  |  |  |  |  |  |  
                    | |  | 10. Short-term unrealized Revenue | 
 |  |  |  |  |  |  |  
                    | |  | 11. Other short-term payables | 
 |  | 1,781 | 394 | 273 | 954 | 918 |  
                    | |  | 12. Provision for short term payables | 
 |  |  |  |  |  |  |  
                    | |  | 13. Bonus and welfare fund | 
 |  | 1,154 | 1,097 | 7,472 | 4,444 | 1,325 |  
                    | |  | 14. Price stabilization fund | 
 |  |  |  |  |  |  |  
                    | |  | 15. Repurchasing and reselling transactions in government bonds | 
 |  |  |  |  |  |  |  
                    | |  | II. Long-term liabilities | 
 |  | 60,928 | 146,728 | 193,037 | 159,112 | 162,000 |  
                    | |  | 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 | 
 |  | 187 | 187 | 187 |  |  |  
                    | |  | 6. Borrowings and long-term financial leased liabilities | 
 |  | 60,741 | 146,541 | 192,850 | 159,112 | 162,000 |  
                    | |  | 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 | 
 |  | 360,118 | 388,719 | 422,983 | 473,312 | 511,062 |  
                    | |  | I. ShareHolder's equity | 
 |  | 360,118 | 388,719 | 422,983 | 473,312 | 511,062 |  
                    | |  | 1. Owner's investment capital | 
 |  | 61,999 | 61,999 | 61,999 | 61,999 | 61,999 |  
                    | |  | 2. Share capital surplus | 
 |  | 33,450 | 33,450 | 33,450 | 33,450 | 33,450 |  
                    | |  | 3. Bond conversion option | 
 |  |  |  |  |  |  |  
                    | |  | 4. Other owner's capital | 
 |  | 571 | 571 | 571 | 571 | 571 |  
                    | |  | 5. Treasury shares | 
 |  |  |  |  |  |  |  
                    | |  | 6. Differences upon asset revaluation | 
 |  |  |  |  |  |  |  
                    | |  | 7. Differences upon foreign exchange rate | 
 |  |  |  |  |  |  |  
                    | |  | 8. Investment and development funds | 
 |  | 19,914 | 15,986 | 15,986 | 11,217 | 11,217 |  
                    | |  | 9. Financial reserve funds | 
 |  |  |  |  |  |  |  
                    | |  | 10. Other funds belonging to owner's equity | 
 |  |  |  |  |  |  |  
                    | |  | 11. After tax undistributed profit | 
 |  | 238,233 | 272,568 | 306,508 | 365,564 | 403,825 |  
                    | |  | - After tax undistributed profit accumulated to the end of prior period | 
 |  | 163,493 | 225,791 | 253,497 | 298,004 | 349,848 |  
                    | |  | - Profit after tax undistributed this period | 
 |  | 74,739 | 46,776 | 53,011 | 67,560 | 53,977 |  
                    | |  | 12. Investment capital resource for basic construction | 
 |  |  |  |  |  |  |  
                    | |  | 13. Assistance fund for arrangement of enterprises | 
 |  |  |  |  |  |  |  
                    | |  | 14. interest of shareholders who not control | 
 |  | 5,951 | 4,145 | 4,468 | 511 |  |  
                    | |  | II. Funding resources and other funds | 
 |  |  |  |  |  |  |  
                    | |  | 1. Funding resources | 
 |  |  |  |  |  |  |  
                    | |  | 2. Funding resources that form fixed assets | 
 |  |  |  |  |  |  |  
                    | |  | 3. Retrenchment provision fund | 
 |  |  |  |  |  |  |  
                    | |  | TOTAL CAPITAL RESOURCES | 
 |  | 573,797 | 636,139 | 732,385 | 770,485 | 761,965 |      
    There is no report. |  |