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Concentration and Major Customers and Suppliers (Details) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Concentration and Major Customers and Suppliers (Details) [Line Items] |  |  |  |
Number of major supplier | 4 | 3 | 4 | 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 | 74.00% | 80.00% | 73.00% | 80.00%
Supplier Two [Member] |  |  |  |
Concentration and Major Customers and Suppliers (Details) [Line Items] |  |  |  |
Percentage of revenue | 11.00% | 9.00% | 11.00% | 9.00%
Supplier Three [Member] |  |  |  |
Concentration and Major Customers and Suppliers (Details) [Line Items] |  |  |  |
Percentage of revenue | 4.00% | 4.00% | 4.00% | 4.00%
Supplier Four [Member] |  |  |  |
Concentration and Major Customers and Suppliers (Details) [Line Items] |  |  |  |
Percentage of revenue | 3.00% |  | 4.00% |

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