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v3.20.1

Concentration and Major Customers and Suppliers (Details) | 3 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019
Concentration and Major Customers and Suppliers (Details) [Line Items] |  |
Number of major supplier | 3 | 3
Sales [Member] |  |
Concentration and Major Customers and Suppliers (Details) [Line Items] |  |
Percentage of revenue | 10.00% | 10.00%
Supplier One [Member] |  |
Concentration and Major Customers and Suppliers (Details) [Line Items] |  |
Percentage of revenue | 70.00% | 80.00%
Supplier Two [Member] |  |
Concentration and Major Customers and Suppliers (Details) [Line Items] |  |
Percentage of revenue | 11.00% | 9.00%
Supplier Three [Member] |  |
Concentration and Major Customers and Suppliers (Details) [Line Items] |  |
Percentage of revenue | 9.00% | 4.00%

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