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                    |  |  | Q4 2020 | Q4 2021 | Q4 2022 | Q4 2023 | Q4 2024 |  
                    | |  | ASSETS | 
 |  |  |  |  |  |  |  
                    | |  | A. CURRENT ASSETS AND SHORT-TERM INVESTMENTS | 
 |  | 554,894 | 627,155 | 761,628 | 848,602 | 889,925 |  
                    | |  | I. Cash and cash equivalents | 
 |  | 57,941 | 63,294 | 131,388 | 158,309 | 133,185 |  
                    | |  | 1. Cash | 
 |  | 57,941 | 63,294 | 131,388 | 154,309 | 68,185 |  
                    | |  | 2. Cash equivalents | 
 |  |  |  |  | 4,000 | 65,000 |  
                    | |  | II. Short-term financial investments | 
 |  |  |  |  | 30,422 | 70,661 |  
                    | |  | 1. Trading securities | 
 |  |  |  |  |  |  |  
                    | |  | 2. Provision for diminution in value of trading securities | 
 |  |  |  |  |  |  |  
                    | |  | 3. Investments holding until maturity | 
 |  |  |  |  | 30,422 | 70,661 |  
                    | |  | III. Short-term receivables | 
 |  | 287,031 | 288,183 | 299,586 | 344,764 | 405,688 |  
                    | |  | 1.  Short-term receivables of customers | 
 |  | 229,729 | 261,632 | 281,332 | 320,933 | 373,065 |  
                    | |  | 2. Prepayments to suppliers | 
 |  | 67,733 | 34,371 | 1,316 | 11,450 | 18,604 |  
                    | |  | 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 | 
 |  | 4,761 | 8,123 | 32,514 | 28,165 | 29,849 |  
                    | |  | 7. Provision for doubtful short-term receivables | 
 |  | -15,193 | -15,942 | -15,576 | -15,784 | -15,830 |  
                    | |  | IV. Inventories | 
 |  | 204,517 | 275,677 | 329,807 | 314,391 | 279,478 |  
                    | |  | 1. Inventories | 
 |  | 204,517 | 275,677 | 329,807 | 314,391 | 279,478 |  
                    | |  | 2. Provision for decline in value of inventories | 
 |  |  |  |  |  |  |  
                    | |  | V. Other current assets | 
 |  | 5,405 |  | 846 | 716 | 913 |  
                    | |  | 1. Short-term prepaid expenses | 
 |  |  |  |  | 716 |  |  
                    | |  | 2. Deductible VAT | 
 |  | 5,405 |  |  |  | 913 |  
                    | |  | 3. Taxes and the State Receivables | 
 |  |  |  | 846 |  |  |  
                    | |  | 4. Repurchasing and reselling transactions in government bonds | 
 |  |  |  |  |  |  |  
                    | |  | 5. Other current assets | 
 |  |  |  |  |  |  |  
                    | |  | B. FIXED ASSETS AND LONG-TERM INVESTMENTS | 
 |  | 189,307 | 402,346 | 364,961 | 262,825 | 227,377 |  
                    | |  | I. Long-term receivables | 
 |  | 717 | 1,098 | 827 | 566 |  |  
                    | |  | 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 | 
 |  | 717 | 1,098 | 827 | 566 |  |  
                    | |  | 6. Provision for doubtful long-term receivables | 
 |  |  |  |  |  |  |  
                    | |  | II. Fixed assets | 
 |  | 86,736 | 381,001 | 339,453 | 256,484 | 214,408 |  
                    | |  | 1. Tangible fixed assets | 
 |  | 78,478 | 366,816 | 327,840 | 247,444 | 208,570 |  
                    | |  | - Cost | 
 |  | 748,264 | 975,225 | 1,018,599 | 1,022,705 | 1,069,437 |  
                    | |  | - Accumulated depreciation | 
 |  | -669,785 | -608,409 | -690,759 | -775,262 | -860,867 |  
                    | |  | 2. Fixed assets of financial leasing | 
 |  | 8,258 | 14,185 | 11,613 | 9,041 | 5,838 |  
                    | |  | - Cost | 
 |  | 11,728 | 15,433 | 15,433 | 15,433 | 12,908 |  
                    | |  | - Accumulated depreciation | 
 |  | -3,470 | -1,248 | -3,820 | -6,392 | -7,071 |  
                    | |  | 3. Intangible fixed assets | 
 |  |  |  |  |  |  |  
                    | |  | - Cost | 
 |  | 78 | 78 | 78 | 78 | 78 |  
                    | |  | - Accumulated depreciation | 
 |  | -78 | -78 | -78 | -78 | -78 |  
                    | |  | III. Real Estate Investments | 
 |  |  |  |  |  |  |  
                    | |  | - Cost | 
 |  |  |  |  |  |  |  
                    | |  | - Accumulated depreciation | 
 |  |  |  |  |  |  |  
                    | |  | IV. Long-term assets in progress | 
 |  | 96,404 | 5,630 |  |  | 1,085 |  
                    | |  | 1. Costs of  long-term production, business in progress | 
 |  |  |  |  |  |  |  
                    | |  | 2. Costs of construction in progress | 
 |  | 96,404 | 5,630 |  |  | 1,085 |  
                    | |  | IV. Long-term financial investments | 
 |  | 4,000 | 4,000 | 4,000 | 2,100 | 2,100 |  
                    | |  | 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 | 
 |  | 4,000 | 4,000 | 4,000 | 2,100 | 2,100 |  
                    | |  | V. Total other long-term assets | 
 |  | 1,449 | 10,616 | 20,682 | 3,674 | 9,784 |  
                    | |  | 1. Long-term prepaid expenses | 
 |  | 1,449 | 10,616 | 20,682 | 3,674 | 9,784 |  
                    | |  | 2. Deferred income tax assets | 
 |  |  |  |  |  |  |  
                    | |  | 3. Other long-term assets | 
 |  |  |  |  |  |  |  
                    | |  | VI. Goodwills | 
 |  |  |  |  |  |  |  
                    | |  | TOTAL ASSETS | 
 |  | 744,201 | 1,029,501 | 1,126,589 | 1,111,426 | 1,117,302 |  
                    | |  | CAPITAL RESOURCES | 
 |  |  |  |  |  |  |  
                    | |  | A. LIABILITIES | 
 |  | 435,084 | 559,937 | 564,372 | 546,746 | 513,446 |  
                    | |  | I. Current liabilities | 
 |  | 398,409 | 442,208 | 477,505 | 490,461 | 486,342 |  
                    | |  | 1. Borrowings and short-term financial leased liabilities | 
 |  | 268,078 | 173,535 | 238,537 | 280,946 | 244,446 |  
                    | |  | 2. Long-term borrowings are due to pay | 
 |  |  |  |  |  |  |  
                    | |  | 3. Short-term payables to sellers | 
 |  | 81,903 | 188,467 | 177,518 | 145,909 | 143,483 |  
                    | |  | 4. Advances from customers | 
 |  | 381 | 1,185 | 96 | 65 | 37 |  
                    | |  | 5. Taxes and other payables to the State Budget | 
 |  | 13,798 | 37,131 | 12,859 | 9,945 | 14,308 |  
                    | |  | 6. Payables to employees | 
 |  | 29,053 | 34,947 | 38,959 | 42,635 | 44,969 |  
                    | |  | 7. Short-term accrued expenses | 
 |  | 1,961 | 2,810 | 230 | 76 | 47 |  
                    | |  | 8. Short-term intercompany payables | 
 |  |  |  |  |  |  |  
                    | |  | 9. Payables to the scheduled progress of construction contracts | 
 |  |  |  |  |  |  |  
                    | |  | 10. Short-term unrealized Revenue | 
 |  |  |  |  |  |  |  
                    | |  | 11. Other short-term payables | 
 |  | 758 | 812 | 765 | 904 | 29,925 |  
                    | |  | 12. Provision for short term payables | 
 |  |  |  |  |  |  |  
                    | |  | 13. Bonus and welfare fund | 
 |  | 2,477 | 3,323 | 8,542 | 9,980 | 9,127 |  
                    | |  | 14. Price stabilization fund | 
 |  |  |  |  |  |  |  
                    | |  | 15. Repurchasing and reselling transactions in government bonds | 
 |  |  |  |  |  |  |  
                    | |  | II. Long-term liabilities | 
 |  | 36,675 | 117,729 | 86,867 | 56,285 | 27,104 |  
                    | |  | 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 | 
 |  | 36,675 | 117,729 | 86,867 | 56,285 | 27,104 |  
                    | |  | 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 | 
 |  | 309,116 | 469,564 | 562,217 | 564,680 | 603,856 |  
                    | |  | I. ShareHolder's equity | 
 |  | 309,116 | 469,564 | 562,217 | 564,680 | 603,856 |  
                    | |  | 1. Owner's investment capital | 
 |  | 116,051 | 116,051 | 116,051 | 116,051 | 116,051 |  
                    | |  | 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 | 
 |  | 49,659 | 114,192 | 118,256 | 118,256 | 118,256 |  
                    | |  | 9. Financial reserve funds | 
 |  |  |  |  |  |  |  
                    | |  | 10. Other funds belonging to owner's equity | 
 |  |  |  |  |  |  |  
                    | |  | 11. After tax undistributed profit | 
 |  | 143,407 | 239,321 | 327,910 | 330,373 | 369,550 |  
                    | |  | - After tax undistributed profit accumulated to the end of prior period | 
 |  |  | 36,105 | 183,901 | 282,964 | 258,397 |  
                    | |  | - Profit after tax undistributed this period | 
 |  | 143,407 | 203,216 | 144,009 | 47,409 | 111,152 |  
                    | |  | 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 | 
 |  | 744,201 | 1,029,501 | 1,126,589 | 1,111,426 | 1,117,302 |      
    There is no report. |  |