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INCOME TAXES - Reconciliation of Income Tax (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Reconciliation between the expense of income taxes computed by applying the PRC tax rate to loss before income taxes and the actual provision for income taxes |  |  |
Loss before income tax |  | $ (2,528) | $ (9,550)
Income tax calculated at the statutory tax rate of the PRC | $ 2,055 | (632) | (2,387)
Effect of income tax rate differences in jurisdictions other than the PRC |  | 468 | 1,151
Non-deductible expenses |  | 77 | 129
Statutory expense |  | (101) | (293)
R&D super deduction | (724) | (1,700) | (2,904)
Effect of preferential tax rates |  | 50 | (86)
Prior year true up |  | 88 | (71)
Changes in valuation allowances |  | 1,711 | 4,501
Income tax expense / (benefit) | $ (61) | $ (39) | $ 40
Tax Jurisdiction of Domicile [Extensible Enumeration] | PRC |  |
Percent |  |  |
Income tax calculated at the statutory tax rate of the PRC (as a percent) | 25.00% | 25.00% | 25.00%
R&D super deduction | (8.80%) |  |
Income tax benefit | (0.70%) |  |
PRC |  |  |
Reconciliation between the expense of income taxes computed by applying the PRC tax rate to loss before income taxes and the actual provision for income taxes |  |  |
Changes in valuation allowances | $ 761 |  |
Other adjustment | $ 30 |  |
Percent |  |  |
Changes in valuation allowance | 9.30% |  |
Other adjustments | 0.40% |  |
Hong Kong |  |  |
Reconciliation between the expense of income taxes computed by applying the PRC tax rate to loss before income taxes and the actual provision for income taxes |  |  |
Income tax calculated at the statutory tax rate of the PRC | $ (563) |  |
Changes in valuation allowances | (1,647) |  |
Changes in unrecognized tax benefits | (107) |  |
Non-taxable income | (348) |  |
Other adjustment | $ 35 |  |
Percent |  |  |
Statutory tax rate difference | (6.90%) |  |
Changes in valuation allowance | (20.00%) |  |
Changes in unrecognized tax benefits | (1.30%) |  |
Percentage of effective rate | (4.20%) |  |
Other adjustments | 0.40% |  |
Singapore and other regions |  |  |
Reconciliation between the expense of income taxes computed by applying the PRC tax rate to loss before income taxes and the actual provision for income taxes |  |  |
Income tax calculated at the statutory tax rate of the PRC | $ 359 |  |
Changes in valuation allowances | $ 88 |  |
Percent |  |  |
Statutory tax rate difference | 4.30% |  |
Changes in valuation allowance | 1.10% |  |

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