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v3.20.1

Accounts Receivable, Net (Details Textual) - USD ($) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Allowance For Doubtful Accounts Continuing Operation [Member] |  |  |
Accounts Receivable, Net (Textual) |  |  |
Recovery of bad debt | $ 10,148 | $ 5,826 | $ (46,831)

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- Definition Amount of increase in allowance for credit loss on accounts receivable, from recovery. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 + Details
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- Details
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