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Long-Term Investments (Details 4) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Net sales | $ 78,786 | $ 212,242
Gross profit | 74,827 | 210,743
BioFirst [Member] |  |
Net sales | 12,110 | 10,334
Gross profit | 1,578 | 1,882
Net loss | (325,652) | (307,034)
Share of losses from investments accounted for using the equity method | (70,411) | (66,205)
Rgene [Member] |  |
Net sales |  |
Gross profit |  |
Net loss | (21,889) | (22,662)
Share of losses from investments accounted for using the equity method |  |

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