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Summary of Significant Accounting Policies (Details) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Oct. 24, 2019 | Dec. 31, 2017
Summary of Significant Accounting Policies (Textual) |  |  |  |
Allowance of doubtful accounts | $ 760,000 | $ 860,000 |  |
Advance to suppliers | $ 410,000 | $ 430,000 |  |
Straight-line method lease term | 50 years |  |  |
Implicit interest rate | 5.00% |  |  |
Short-term Investment | The Company’s office leases have a 3-year term and the lease of its assembly site has a 5.5-year term. |  |  |
Revenue recognition description |  | The Company derives revenues from the processing, distribution and sale of its products. The Company recognizes its revenues net of value-added taxes (“VAT”). The Company is subject to VAT which had been levied at the rate of 17% on the invoiced value of sales until April 30, 2018, after which date the rate was reduced to 16%. VAT rate was further reduced to 13% starting from April 1, 2019. Output VAT is borne by customers in addition to the invoiced value of sales and input VAT is borne by the Company in addition to the invoiced value of purchases to the extent not refunded for export sales. |  |
Total revenue of Greenland | 0.00% |  |  |
Total sales return, percentage |  | 1.01% |  |
Research and development costs | $ 5,786,946 | $ 5,526,546 |  |
Other long-term liabilities | $ 1,810,000 | $ 2,210,000 |  |
Income tax rate | 50.00% |  |  |
Owned foreign enterprise percentage | 10.00% |  |  |
Registered capital percentage | 50.00% |  |  |
Ownership percentage | 10.00% |  |  |
PRC [Member] |  |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |  |
Value added tax description | The VAT standard rate had been 17% of the gross sale price until April 30, 2018, after which date the rate was reduced to 16%. VAT rate was further reduced to 13% starting from April 1, 2019. |  |  |
Zhongchai Holding [Member] |  |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |  |
Shares received (in Shares) |  |  | 7,500,000 | 7,500,000

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