Research and development expenses (Details) - USD ($) |
12 Months Ended | ||
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Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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Research and development expenses | |||
Labor | $ 5,471,136 | $ 4,403,038 | $ 2,763,805 |
Materials | 2,383,730 | 3,253,593 | 2,618,226 |
Government grants | (476,985) | (1,087,344) | |
Research and development expenses | $ 7,854,866 | $ 7,179,646 | $ 4,294,687 |
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- Definition The amount of expenditure directly attributable to research or development activities, recognised in profit or loss. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Research and development in government grants. No definition available.
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- Definition Represents about Research and development in labor. No definition available.
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- Definition Research and development in materials. No definition available.
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