| Schedule of income loss before income taxes |
| | Three Months Ended June 30, | | | Six Months Ended June 30, | | | | 2026 | | | 2025 | | | 2026 | | | 2025 | | | | | | | (Unaudited) | | Domestic (U.S.) | | $ | (130,283 | ) | | $ | (2,024,052 | ) | | $ | 56,076 | | | $ | (3,242,880 | ) | Foreign (PRC) | | | (4,551,455 | ) | | | 19,058 | | | | (5,050,819 | ) | | | (121,990 | ) | Income (loss) before income taxes | | | (4,681,738 | ) | | | (2,004,994 | ) | | | (4,994,743 | ) | | | (3,364,870 | ) | Income tax expense (benefit) | | | (26,039 | ) | | | (106,217 | ) | | | (32,360 | ) | | | (169,851 | ) | Income (loss) from operations | | $ | (4,655,699 | ) | | $ | (1,898,777 | ) | | $ | (4,962,383 | ) | | $ | (3,195,019 | ) | Effective tax rate | | | 0.6 | % | | | 5.3 | % | | | 0.6 | % | | | 5.0 | % |
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