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Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2021
Accounting Policies [Abstract]  
Schedule of property, plant and equipment are carried at cost less accumulated depreciation

Buildings

 

20 years

Machineries and equipment

 

10 years

Fixtures and electronic equipment

 

4 – 5 years

Motor vehicles

 

5 years

Leasehold improvements

 

Shorter of the lease term or estimated useful lives

Schedule of net revenues from customers

 

December 31,
2019

 

December 31,
2020

 

December 31,
2021

Percentage of revenue contributed by Customer A

 

11

%

 

 

 

Percentage of revenue contributed by Customer B

 

 

 

 

11

%

Schedule of accounts receivable from customers

 

December 31,
2020

 

December 31,
2021

Percentage of accounts receivable from Customer C

 

10

%

 

18

%