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Taxes (Details 1) - USD ($) | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Deferred tax assets: |  |
Allowance for doubtful account | $ 735,633 | $ 789,151
Net operating loss carryforward | 3,280,567 | 3,098,352
Long-lived assets impairment | 657,146 | 696,256
Deferred tax assets | 4,673,346 | 4,583,759
Deferred tax liabilities: |  |
Recognition of intangible assets arising from business combinations |  | (17,444)
Capitalized development costs | (502,734) | (544,982)
Change in valuation allowance | (4,170,612) | (4,021,333)
Deferred tax assets(liabilities), net |  |

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