Annual report pursuant to Section 13 and 15(d)

Certain Risks and Concentrations (Details) - Schedule of major suppliers

v3.21.2
Certain Risks and Concentrations (Details) - Schedule of major suppliers
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Supplier [Member]      
Concentration Risk [Line Items]      
Concentration risk, Percentage 32.00% 44.00% 25.00%
Global Deep Ocean [Member]      
Concentration Risk [Line Items]      
Concentration risk, Percentage 15.00% [1] [1]
Supplier C [Member]      
Concentration Risk [Line Items]      
Concentration risk, Percentage 13.00% [1] [1]
Supplier D [Member]      
Concentration Risk [Line Items]      
Concentration risk, Percentage 10.00% [1] [1]
Supplier E [Member]      
Concentration Risk [Line Items]      
Concentration risk, Percentage [1] 16.00% 24.00%
Supplier F [Member]      
Concentration Risk [Line Items]      
Concentration risk, Percentage [1] [1] 17.00%
[1] less than 10%