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                    |  |  | Q2 2023 | Q3 2023 | Q4 2023 | Q4 2024 | Q2 2025 |  
                    | |  | ASSETS | 
 |  |  |  |  |  |  |  
                    | |  | A. CURRENT ASSETS AND SHORT-TERM INVESTMENTS | 
 |  | 424,273 | 423,076 | 409,191 | 520,039 | 515,138 |  
                    | |  | I. Cash and cash equivalents | 
 |  | 2,263 | 3,417 | 2,373 | 8,950 | 5,905 |  
                    | |  | 1. Cash | 
 |  | 2,263 | 3,417 | 2,373 | 8,950 | 5,905 |  
                    | |  | 2. Cash equivalents | 
 |  |  |  |  |  |  |  
                    | |  | II. Short-term financial investments | 
 |  |  |  |  |  |  |  
                    | |  | 1. Trading securities | 
 |  |  |  |  |  |  |  
                    | |  | 2. Provision for diminution in value of trading securities | 
 |  |  |  |  |  |  |  
                    | |  | 3. Investments holding until maturity | 
 |  |  |  |  |  |  |  
                    | |  | III. Short-term receivables | 
 |  | 100,488 | 111,855 | 121,852 | 243,266 | 256,610 |  
                    | |  | 1.  Short-term receivables of customers | 
 |  | 84,747 | 93,874 | 102,606 | 108,600 | 143,476 |  
                    | |  | 2. Prepayments to suppliers | 
 |  | 10,813 | 13,139 | 13,294 | 13,722 | 14,230 |  
                    | |  | 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 | 
 |  | 65,108 | 65,023 | 66,133 | 181,125 | 159,085 |  
                    | |  | 7. Provision for doubtful short-term receivables | 
 |  | -60,181 | -60,181 | -60,181 | -60,181 | -60,181 |  
                    | |  | IV. Inventories | 
 |  | 309,569 | 295,123 | 276,743 | 258,532 | 242,600 |  
                    | |  | 1. Inventories | 
 |  | 318,455 | 304,008 | 285,629 | 267,418 | 251,485 |  
                    | |  | 2. Provision for decline in value of inventories | 
 |  | -8,886 | -8,886 | -8,886 | -8,886 | -8,886 |  
                    | |  | V. Other current assets | 
 |  | 11,954 | 12,681 | 8,223 | 9,290 | 10,023 |  
                    | |  | 1. Short-term prepaid expenses | 
 |  | 724 | 898 | 558 | 865 | 892 |  
                    | |  | 2. Deductible VAT | 
 |  | 11,031 | 11,585 | 7,644 | 8,404 | 9,056 |  
                    | |  | 3. Taxes and the State Receivables | 
 |  | 198 | 198 | 22 | 22 | 75 |  
                    | |  | 4. Repurchasing and reselling transactions in government bonds | 
 |  |  |  |  |  |  |  
                    | |  | 5. Other current assets | 
 |  |  |  |  |  |  |  
                    | |  | B. FIXED ASSETS AND LONG-TERM INVESTMENTS | 
 |  | 95,615 | 91,314 | 85,519 | 64,204 | 56,347 |  
                    | |  | I. Long-term receivables | 
 |  | 1,783 | 1,783 | 1,783 | 1,783 | 1,783 |  
                    | |  | 1. Long-term customer's receivables | 
 |  |  |  |  |  |  |  
                    | |  | 2. Business capital in the subsidiary units | 
 |  |  |  |  |  |  |  
                    | |  | 3. Internal long-term receivables | 
 |  |  |  |  | 1,783 |  |  
                    | |  | 4. Receivables on long-term loans | 
 |  |  |  |  |  |  |  
                    | |  | 5. Other long-term receivables | 
 |  | 1,783 | 1,783 | 1,783 |  | 1,783 |  
                    | |  | 6. Provision for doubtful long-term receivables | 
 |  |  |  |  |  |  |  
                    | |  | II. Fixed assets | 
 |  | 86,437 | 82,447 | 77,641 | 57,767 | 50,113 |  
                    | |  | 1. Tangible fixed assets | 
 |  | 82,068 | 78,161 | 73,438 | 54,064 | 46,568 |  
                    | |  | - Cost | 
 |  | 363,507 | 365,057 | 365,591 | 361,496 | 358,326 |  
                    | |  | - Accumulated depreciation | 
 |  | -281,439 | -286,896 | -292,153 | -307,432 | -311,758 |  
                    | |  | 2. Fixed assets of financial leasing | 
 |  |  |  |  |  |  |  
                    | |  | - Cost | 
 |  |  |  |  |  |  |  
                    | |  | - Accumulated depreciation | 
 |  |  |  |  |  |  |  
                    | |  | 3. Intangible fixed assets | 
 |  | 4,369 | 4,286 | 4,203 | 3,703 | 3,545 |  
                    | |  | - Cost | 
 |  | 9,686 | 9,686 | 9,686 | 9,363 | 9,363 |  
                    | |  | - Accumulated depreciation | 
 |  | -5,318 | -5,400 | -5,483 | -5,660 | -5,818 |  
                    | |  | III. Real Estate Investments | 
 |  |  |  |  |  |  |  
                    | |  | - Cost | 
 |  |  |  |  |  |  |  
                    | |  | - Accumulated depreciation | 
 |  |  |  |  |  |  |  
                    | |  | IV. Long-term assets in progress | 
 |  | 2,368 | 2,420 | 2,133 | 2,133 | 2,454 |  
                    | |  | 1. Costs of  long-term production, business in progress | 
 |  |  |  |  |  |  |  
                    | |  | 2. Costs of construction in progress | 
 |  | 2,368 | 2,420 | 2,133 | 2,133 | 2,454 |  
                    | |  | IV. Long-term financial investments | 
 |  | 671 | 671 | 609 | 662 | 662 |  
                    | |  | 1. Investment in subsidiaries | 
 |  |  |  |  |  |  |  
                    | |  | 2. Investments in associated companies, joint ventures | 
 |  | 1,814 | 1,814 | 1,814 | 1,814 | 1,814 |  
                    | |  | 3. Other investments in equity instruments | 
 |  |  |  |  |  |  |  
                    | |  | 4. Provision for diminution in value of financial long-term investments | 
 |  | -1,443 | -1,443 | -1,505 | -1,452 | -1,452 |  
                    | |  | 5. Investments holding until maturity | 
 |  | 300 | 300 | 300 | 300 | 300 |  
                    | |  | V. Total other long-term assets | 
 |  | 4,356 | 3,994 | 3,354 | 1,860 | 1,336 |  
                    | |  | 1. Long-term prepaid expenses | 
 |  | 4,356 | 3,994 | 3,354 | 1,860 | 1,336 |  
                    | |  | 2. Deferred income tax assets | 
 |  |  |  |  |  |  |  
                    | |  | 3. Other long-term assets | 
 |  |  |  |  |  |  |  
                    | |  | VI. Goodwills | 
 |  |  |  |  |  |  |  
                    | |  | TOTAL ASSETS | 
 |  | 519,888 | 514,390 | 494,710 | 584,244 | 571,484 |  
                    | |  | CAPITAL RESOURCES | 
 |  |  |  |  |  |  |  
                    | |  | A. LIABILITIES | 
 |  | 408,401 | 392,705 | 378,508 | 467,883 | 453,438 |  
                    | |  | I. Current liabilities | 
 |  | 389,036 | 360,388 | 358,991 | 448,202 | 433,703 |  
                    | |  | 1. Borrowings and short-term financial leased liabilities | 
 |  | 160,412 | 149,003 | 159,799 | 151,633 | 165,697 |  
                    | |  | 2. Long-term borrowings are due to pay | 
 |  |  |  |  |  |  |  
                    | |  | 3. Short-term payables to sellers | 
 |  | 164,974 | 154,830 | 136,807 | 107,340 | 115,553 |  
                    | |  | 4. Advances from customers | 
 |  | 38,077 | 31,983 | 40,762 | 47,006 | 36,190 |  
                    | |  | 5. Taxes and other payables to the State Budget | 
 |  | 2,838 | 2,709 | 1,802 | 2,365 | 2,494 |  
                    | |  | 6. Payables to employees | 
 |  | 8,908 | 7,674 | 6,280 | 5,505 | 7,825 |  
                    | |  | 7. Short-term accrued expenses | 
 |  | 3,203 | 3,225 | 3,097 | 543 | 444 |  
                    | |  | 8. Short-term intercompany payables | 
 |  |  |  |  |  |  |  
                    | |  | 9. Payables to the scheduled progress of construction contracts | 
 |  |  |  |  |  |  |  
                    | |  | 10. Short-term unrealized Revenue | 
 |  |  |  |  |  |  |  
                    | |  | 11. Other short-term payables | 
 |  | 10,622 | 10,962 | 10,444 | 133,809 | 105,498 |  
                    | |  | 12. Provision for short term payables | 
 |  |  |  |  |  |  |  
                    | |  | 13. Bonus and welfare fund | 
 |  | 2 | 2 | 2 | 2 | 2 |  
                    | |  | 14. Price stabilization fund | 
 |  |  |  |  |  |  |  
                    | |  | 15. Repurchasing and reselling transactions in government bonds | 
 |  |  |  |  |  |  |  
                    | |  | II. Long-term liabilities | 
 |  | 19,365 | 32,316 | 19,517 | 19,680 | 19,735 |  
                    | |  | 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 | 
 |  |  | 25,716 |  |  |  |  
                    | |  | 6. Borrowings and long-term financial leased liabilities | 
 |  | 12,765 | 6,600 | 12,917 | 13,080 | 13,135 |  
                    | |  | 7. Convertible bonds | 
 |  | 6,600 |  | 6,600 | 6,600 | 6,600 |  
                    | |  | 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 | 
 |  | 111,487 | 121,685 | 116,202 | 116,361 | 118,046 |  
                    | |  | I. ShareHolder's equity | 
 |  | 111,487 | 121,685 | 116,202 | 116,361 | 118,046 |  
                    | |  | 1. Owner's investment capital | 
 |  | 115,000 | 115,000 | 115,000 | 115,000 | 115,000 |  
                    | |  | 2. Share capital surplus | 
 |  | 21,874 | 21,874 | 21,874 | 21,874 | 21,874 |  
                    | |  | 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 | 
 |  | 617 | 617 | 617 | 617 | 617 |  
                    | |  | 9. Financial reserve funds | 
 |  |  |  |  |  |  |  
                    | |  | 10. Other funds belonging to owner's equity | 
 |  |  |  |  |  |  |  
                    | |  | 11. After tax undistributed profit | 
 |  | -26,004 | -15,806 | -21,289 | -21,131 | -19,445 |  
                    | |  | - After tax undistributed profit accumulated to the end of prior period | 
 |  | -25,548 | -25,548 | -25,548 | -21,289 | -21,131 |  
                    | |  | - Profit after tax undistributed this period | 
 |  | -456 | 9,742 | 4,259 | 159 | 1,685 |  
                    | |  | 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 | 
 |  | 519,888 | 514,390 | 494,710 | 584,244 | 571,484 |      
    There is no report. |  |