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PROPERTY, PLANT AND EQUIPMENT, NET (Tables)
3 Months Ended
Mar. 31, 2021
PROPERTY, PLANT AND EQUIPMENT, NET [Abstract]  
Property, Plant and Equipment
At March 31, 2021 and December 31, 2020, property, plant and equipment consisted of the following:
 
 
 
March 31,
2021
   
December 31,
2020
 
Manufacturing equipment
 
$
5,924
   
$
5,966
 
Office equipment
   
1,260
     
1,047
 
Transportation equipment
   
213
     
216
 
Leasehold improvement
   
2,551
     
2,398
 
Total cost
   
9,948
     
9,627
 
Less: Total accumulated depreciation
   
(4,049
)
   
(3,745
)
Construction in progress
   
2,873
     
2,310
 
Total property, plant and equipment, net
 
$
8,772
   
$
8,192