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INVENTORIES (Tables)
12 Months Ended
Dec. 31, 2022
INVENTORIES  
Schedule of inventories

At December 31, 

At December 31, 

    

2021

    

2022

$

$

Raw materials

 

155,433

310,394

Work-in-process

 

117,509

265,109

Finished goods

 

919,432

948,592

 

1,192,374

1,524,095