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Revenue (Tables)
12 Months Ended
Dec. 31, 2021
Revenue from Contract with Customer [Abstract]  
Disaggregation of Revenue The following tables present revenue disaggregated by geography of the customer’s shipping location for the years ended December 31, 2021 and 2020:
Year Ended December 31,
20212020
United States$11,313 $4,281 
Greater China25,973 14,297 
Latin America5,192 1,530 
Rest of Asia Pacific1,006 1,478 
Europe4,928 1,024 
Total$48,412 $22,610 
Schedule of Contract Liabilities
The following table presents the liabilities associated with the engineering services contracts as of December 31, 2021 and 2020:
December 31,
20212020
Deferred revenue$1,840 $1,665 
Schedules of Customers Accounting for More Than 10% of Total Revenue
As identified below, some of our customers accounted for more than 10% of the Company’s total revenue for the years ended December 31, 2021 and 2020:

December 31,
20212020
Customer A39.0 %57.0 %
Customer B4.6 %12.9 %