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Payables to Former Subsidiaries (Details) - Schedule of payables to a former subsidiaries, net - USD ($) | Mar. 31, 2021 | Dec. 31, 2020
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Payables to Former Subsidiaries (Details) - Schedule of payables to a former subsidiaries, net [Line Items] |  |
Payables to former subsidiaries, net | $ 382,638 | $ 626,990
Bak Tianjin [Member] |  |
Payables to Former Subsidiaries (Details) - Schedule of payables to a former subsidiaries, net [Line Items] |  |
Payables to former subsidiaries, net | 21,365 | 29,852
Bak Shenzhen [Member] |  |
Payables to Former Subsidiaries (Details) - Schedule of payables to a former subsidiaries, net [Line Items] |  |
Payables to former subsidiaries, net | $ 361,273 | $ 597,138

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