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                    |  |  | Q4 2020 | Q4 2021 | Q4 2022 | Q4 2023 | Q4 2024 |  
                    | |  | ASSETS | 
 |  |  |  |  |  |  |  
                    | |  | A. CURRENT ASSETS AND SHORT-TERM INVESTMENTS | 
 |  | 535,658 | 556,487 | 517,009 | 525,989 | 531,411 |  
                    | |  | I. Cash and cash equivalents | 
 |  | 70,110 | 44,965 | 29,539 | 26,172 | 56,544 |  
                    | |  | 1. Cash | 
 |  | 69,600 | 41,465 | 29,539 | 22,404 | 51,424 |  
                    | |  | 2. Cash equivalents | 
 |  | 510 | 3,500 |  | 3,768 | 5,120 |  
                    | |  | II. Short-term financial investments | 
 |  | 31,900 | 7,400 | 9,016 | 7,786 | 8,338 |  
                    | |  | 1. Trading securities | 
 |  |  |  |  |  |  |  
                    | |  | 2. Provision for diminution in value of trading securities | 
 |  |  |  |  |  |  |  
                    | |  | 3. Investments holding until maturity | 
 |  | 31,900 | 7,400 | 9,016 | 7,786 | 8,338 |  
                    | |  | III. Short-term receivables | 
 |  | 260,640 | 294,923 | 308,466 | 331,779 | 310,949 |  
                    | |  | 1.  Short-term receivables of customers | 
 |  | 301,585 | 347,490 | 357,702 | 377,359 | 332,810 |  
                    | |  | 2. Prepayments to suppliers | 
 |  | 13,613 | 3,235 | 2,746 | 5,130 | 28,031 |  
                    | |  | 3. Short-term intercompany receivables | 
 |  |  |  |  |  |  |  
                    | |  | 4. Receivables according to the progress of construction contracts | 
 |  |  |  |  |  |  |  
                    | |  | 5. Receivables on short-term loans | 
 |  | 2,932 |  |  |  |  |  
                    | |  | 6. Other short-term receivables | 
 |  | 3,907 | 6,045 | 5,989 | 6,119 | 6,175 |  
                    | |  | 7. Provision for doubtful short-term receivables | 
 |  | -61,396 | -61,846 | -57,970 | -56,829 | -56,068 |  
                    | |  | IV. Inventories | 
 |  | 170,060 | 207,038 | 169,637 | 160,022 | 155,440 |  
                    | |  | 1. Inventories | 
 |  | 170,107 | 207,084 | 169,683 | 160,069 | 155,486 |  
                    | |  | 2. Provision for decline in value of inventories | 
 |  | -47 | -47 | -47 | -47 | -47 |  
                    | |  | V. Other current assets | 
 |  | 2,948 | 2,161 | 351 | 229 | 141 |  
                    | |  | 1. Short-term prepaid expenses | 
 |  | 2,948 |  |  |  |  |  
                    | |  | 2. Deductible VAT | 
 |  |  | 2,161 | 351 | 53 | 141 |  
                    | |  | 3. Taxes and the State Receivables | 
 |  |  |  |  | 176 |  |  
                    | |  | 4. Repurchasing and reselling transactions in government bonds | 
 |  |  |  |  |  |  |  
                    | |  | 5. Other current assets | 
 |  |  |  |  |  |  |  
                    | |  | B. FIXED ASSETS AND LONG-TERM INVESTMENTS | 
 |  | 240,142 | 271,028 | 252,225 | 234,665 | 219,476 |  
                    | |  | I. Long-term receivables | 
 |  |  |  |  |  | 252 |  
                    | |  | 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 | 
 |  |  |  |  |  | 252 |  
                    | |  | 6. Provision for doubtful long-term receivables | 
 |  |  |  |  |  |  |  
                    | |  | II. Fixed assets | 
 |  | 200,195 | 231,229 | 216,856 | 198,944 | 184,344 |  
                    | |  | 1. Tangible fixed assets | 
 |  | 196,510 | 225,074 | 211,379 | 194,142 | 182,878 |  
                    | |  | - Cost | 
 |  | 333,259 | 382,226 | 397,592 | 403,374 | 413,071 |  
                    | |  | - Accumulated depreciation | 
 |  | -136,748 | -157,152 | -186,213 | -209,231 | -230,193 |  
                    | |  | 2. Fixed assets of financial leasing | 
 |  | 3,665 | 6,142 | 5,472 | 4,802 | 1,466 |  
                    | |  | - Cost | 
 |  | 5,364 | 6,700 | 6,700 | 6,700 | 1,759 |  
                    | |  | - Accumulated depreciation | 
 |  | -1,698 | -558 | -1,228 | -1,898 | -293 |  
                    | |  | 3. Intangible fixed assets | 
 |  | 20 | 13 | 6 |  |  |  
                    | |  | - Cost | 
 |  | 98 | 98 | 98 | 98 | 98 |  
                    | |  | - Accumulated depreciation | 
 |  | -78 | -85 | -92 | -98 | -98 |  
                    | |  | III. Real Estate Investments | 
 |  | 1,000 | 1,000 | 1,000 | 1,000 | 1,000 |  
                    | |  | - Cost | 
 |  | 1,000 | 1,000 | 1,000 | 1,000 | 1,000 |  
                    | |  | - Accumulated depreciation | 
 |  |  |  |  |  |  |  
                    | |  | IV. Long-term assets in progress | 
 |  | 2,390 | 4,417 | 932 | 827 | 1,501 |  
                    | |  | 1. Costs of  long-term production, business in progress | 
 |  |  |  |  |  |  |  
                    | |  | 2. Costs of construction in progress | 
 |  | 2,390 | 4,417 | 932 | 827 | 1,501 |  
                    | |  | IV. Long-term financial investments | 
 |  | 2,803 | 1,741 | 778 | 53 |  |  
                    | |  | 1. Investment in subsidiaries | 
 |  |  |  |  |  |  |  
                    | |  | 2. Investments in associated companies, joint ventures | 
 |  | 2,803 | 1,741 | 778 | 53 |  |  
                    | |  | 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 | 
 |  | 33,753 | 32,641 | 32,658 | 33,840 | 32,379 |  
                    | |  | 1. Long-term prepaid expenses | 
 |  | 33,753 | 32,641 | 32,658 | 33,840 | 32,376 |  
                    | |  | 2. Deferred income tax assets | 
 |  |  |  |  |  | 2 |  
                    | |  | 3. Other long-term assets | 
 |  |  |  |  |  |  |  
                    | |  | VI. Goodwills | 
 |  |  |  |  |  |  |  
                    | |  | TOTAL ASSETS | 
 |  | 775,800 | 827,515 | 769,234 | 760,653 | 750,887 |  
                    | |  | CAPITAL RESOURCES | 
 |  |  |  |  |  |  |  
                    | |  | A. LIABILITIES | 
 |  | 503,669 | 549,535 | 516,872 | 512,086 | 498,806 |  
                    | |  | I. Current liabilities | 
 |  | 479,005 | 512,286 | 484,713 | 494,219 | 495,611 |  
                    | |  | 1. Borrowings and short-term financial leased liabilities | 
 |  | 109,898 | 151,252 | 183,680 | 152,728 | 178,202 |  
                    | |  | 2. Long-term borrowings are due to pay | 
 |  |  |  |  |  |  |  
                    | |  | 3. Short-term payables to sellers | 
 |  | 197,005 | 223,752 | 175,038 | 225,672 | 210,399 |  
                    | |  | 4. Advances from customers | 
 |  | 87,868 | 48,497 | 52,790 | 45,709 | 46,436 |  
                    | |  | 5. Taxes and other payables to the State Budget | 
 |  | 13,105 | 11,772 | 7,440 | 5,837 | 7,630 |  
                    | |  | 6. Payables to employees | 
 |  | 46,477 | 44,814 | 26,599 | 27,518 | 23,822 |  
                    | |  | 7. Short-term accrued expenses | 
 |  | 5,734 | 3,385 | 3,542 | 1,998 | 2,726 |  
                    | |  | 8. Short-term intercompany payables | 
 |  |  |  |  |  |  |  
                    | |  | 9. Payables to the scheduled progress of construction contracts | 
 |  |  |  |  |  |  |  
                    | |  | 10. Short-term unrealized Revenue | 
 |  |  |  |  |  |  |  
                    | |  | 11. Other short-term payables | 
 |  | 1,558 | 7,062 | 17,444 | 19,665 | 12,436 |  
                    | |  | 12. Provision for short term payables | 
 |  | 12,906 | 12,618 | 8,290 | 6,976 | 7,097 |  
                    | |  | 13. Bonus and welfare fund | 
 |  | 4,454 | 9,133 | 9,892 | 8,116 | 6,862 |  
                    | |  | 14. Price stabilization fund | 
 |  |  |  |  |  |  |  
                    | |  | 15. Repurchasing and reselling transactions in government bonds | 
 |  |  |  |  |  |  |  
                    | |  | II. Long-term liabilities | 
 |  | 24,664 | 37,249 | 32,159 | 17,868 | 3,195 |  
                    | |  | 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 | 
 |  | 1,127 | 524 |  |  |  |  
                    | |  | 6. Borrowings and long-term financial leased liabilities | 
 |  | 23,139 | 36,114 | 30,698 | 16,509 | 1,595 |  
                    | |  | 7. Convertible bonds | 
 |  |  |  |  |  |  |  
                    | |  | 8. Deferred income tax payables | 
 |  | 399 | 611 | 1,461 | 1,359 | 1,600 |  
                    | |  | 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 | 
 |  | 272,130 | 277,980 | 252,361 | 248,567 | 252,081 |  
                    | |  | I. ShareHolder's equity | 
 |  | 272,130 | 277,980 | 252,361 | 248,567 | 252,081 |  
                    | |  | 1. Owner's investment capital | 
 |  | 64,141 | 64,141 | 64,141 | 64,141 | 64,141 |  
                    | |  | 2. Share capital surplus | 
 |  | 6,738 | 6,738 | 6,738 | 6,738 | 6,738 |  
                    | |  | 3. Bond conversion option | 
 |  |  |  |  |  |  |  
                    | |  | 4. Other owner's capital | 
 |  |  |  |  |  |  |  
                    | |  | 5. Treasury shares | 
 |  | -18 | -18 | -18 | -18 | -18 |  
                    | |  | 6. Differences upon asset revaluation | 
 |  |  |  |  |  |  |  
                    | |  | 7. Differences upon foreign exchange rate | 
 |  |  |  |  |  |  |  
                    | |  | 8. Investment and development funds | 
 |  | 75,217 | 87,385 | 92,398 | 94,336 | 97,541 |  
                    | |  | 9. Financial reserve funds | 
 |  |  |  |  |  |  |  
                    | |  | 10. Other funds belonging to owner's equity | 
 |  |  |  |  |  |  |  
                    | |  | 11. After tax undistributed profit | 
 |  | 56,741 | 44,084 | 22,103 | 16,236 | 16,202 |  
                    | |  | - After tax undistributed profit accumulated to the end of prior period | 
 |  | 17,199 | 11,578 | 12,182 | 8,151 | 6,946 |  
                    | |  | - Profit after tax undistributed this period | 
 |  | 39,542 | 32,506 | 9,921 | 8,085 | 9,256 |  
                    | |  | 12. Investment capital resource for basic construction | 
 |  |  |  |  |  |  |  
                    | |  | 13. Assistance fund for arrangement of enterprises | 
 |  |  |  |  |  |  |  
                    | |  | 14. interest of shareholders who not control | 
 |  | 69,312 | 75,651 | 67,000 | 67,134 | 67,477 |  
                    | |  | II. Funding resources and other funds | 
 |  |  |  |  |  |  |  
                    | |  | 1. Funding resources | 
 |  |  |  |  |  |  |  
                    | |  | 2. Funding resources that form fixed assets | 
 |  |  |  |  |  |  |  
                    | |  | 3. Retrenchment provision fund | 
 |  |  |  |  |  |  |  
                    | |  | TOTAL CAPITAL RESOURCES | 
 |  | 775,800 | 827,515 | 769,234 | 760,653 | 750,887 |      
    There is no report. |  |