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ACCOUNTS RECEIVABLE, NET (Details) - USD ($) | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
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Credit Loss [Abstract] |  |  |
Accounts receivable | $ 15,098,733 | $ 12,534,236 |
Allowance for doubtful accounts | (1,467,374) | (644,090) | $ (198,516)
Total accounts receivable, net | $ 13,631,359 | $ 11,890,146 |

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- Definition Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522 + Details
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