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SUMMARY OF PRINCIPAL ACCOUNTING POLICIES - Concentration of credit risk (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Concentration of credit risk
Advances to suppliers	$ 253,484	$ 225,879
Supplier | Supplier A
Concentration of credit risk
Advances to suppliers	$ 35,359	37,117
Supplier | Supplier B
Concentration of credit risk
Advances to suppliers		52,257
Supplier | Supplier C
Concentration of credit risk
Advances to suppliers		$ 36,026

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- Definition

Carrying value of capitalized payments made in advance for inventory that is expected to be received within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(8))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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