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CONCENTRATION OF RISKS (Narrative) (Details)	12 Months Ended
	Dec. 31, 2021 customer USD ($)	Dec. 31, 2020 customer USD ($)	Dec. 31, 2019 customer USD ($)
Foreign currency exchange rate risk
Appreciation and depreciation of the RMB against US dollar (as a percent)	(2.30%)	(6.30%)	1.30%
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member]
Concentration Risk [Line Items]
Number of customers | customer	5	5	5
Concentration risk percentage	30.95%	25.85%	34.60%
Supplier Concentration Risk [Member] | Cost of Goods, Total [Member]
Concentration Risk [Line Items]
Concentration risk percentage	94.00%	95.00%	97.00%
Number of suppliers | $	5	5	5

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

No definition available.

+ Details

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- Definition

Represents the number of customers.

+ References

No definition available.

+ Details

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X

- Definition

Represents the number of suppliers.

+ References

No definition available.

+ Details

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Balance Type:	na
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X

- Definition

Represents percentage of appreciation and depreciation of the RMB against US dollar.

+ References

No definition available.

+ 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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- References

No definition available.

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- Details

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- Details

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- Details

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