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SUMMARY OF PRINCIPAL ACCOUNTING POLICIES (Tables)
12 Months Ended
Dec. 31, 2022
SUMMARY OF PRINCIPAL ACCOUNTING POLICIES  
Schedule of property, plant and equipment, depreciation, estimated lives

Property, plant and equipment are recorded at cost less accumulated depreciation. Depreciation is recognized on a straight-line basis over the following estimated useful lives:

Buildings and plant

    

30

years

Machinery and equipment

 

15

years

Furniture, fixtures and equipment

 

3-10

years

Motor vehicles

 

6

years

Schedule of share-based compensation expenses

Year ended December 31, 

    

2020

    

2021

    

2022

Selling, general and administrative expenses

$

15,929

$

8,389

$

299,346

Cost of revenues

 

1,857

 

1,586

 

7,739

Property, plant and equipment, net

5,383

Inventories

2,143

Research and development expenses

 

122

 

102

 

362

Total

$

17,908

$

10,077

$

314,973