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Concentrations (Details Textual) | 6 Months Ended | 12 Months Ended
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Jun. 30, 2020 Customer / Integer Supplier / Integer | Jun. 30, 2019 Supplier / Integer | Dec. 31, 2019 Customer / Integer Supplier / Integer
Outstanding accounts payable [Member] |  |  |
Concentrations (Textual) |  |  |
Concentration risk, percentage |  | 10.00% |
Number of supplier |  | 4 |
10% or more of purchase [Member] | Outstanding accounts payable [Member] |  |  |
Concentrations (Textual) |  |  |
Concentration risk, percentage | 93.60% |  | 90.80%
Number of supplier | 1 |  | 1
Outstanding accounts receivable [Member] |  |  |
Concentrations (Textual) |  |  |
Concentration risk, percentage | 10.00% |  |
More than 10% Revenues [Member] | Outstanding accounts receivable [Member] |  |  |
Concentrations (Textual) |  |  |
Concentration risk, percentage | 78.70% |  | 93.00%
Number of customer | Customer / Integer | 2 |  | 2

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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13531-108611 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13537-108611 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592 + Details
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