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Significant Accounting Policies (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2022

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	%

Disaggregation of Revenue

		Three Months Ended March 31,
		2021			2022
China and Asia & Pacific		$	12,484		$	33,242
Europe			2,327			2,751
USA			127			675
Total		$	14,938		$	36,668

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Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables.

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Tabular disclosure of public utility physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation expense and method used, including composite depreciation, and accumulated depreciation.

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Tabular disclosure of the names of foreign countries from which revenue is material and the amount of revenue from external customers attributed to those countries. An entity may also provide subtotals of geographic information about groups of countries.

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