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Property, plant and equipment, net (Tables)
6 Months Ended
Jun. 30, 2022
Property, plant and equipment, net  
Schedule of property, plant and equipment

    

June 30, 

    

December 31, 

2022

2021

Building

$

4,987,014

$

5,228,347

Machinery and Production equipment

 

1,250,731

 

1,307,356

Electronic equipment

 

196,006

 

203,305

Office equipment

 

46,094

 

48,440

Automobiles

 

518,606

 

545,006

Construction in progress

 

326,767

 

343,401

Subtotal

 

7,325,218

 

7,675,855

Less: Accumulated depreciation

 

(5,495,957)

 

(5,571,908)

Property, plant and equipment, net

$

1,829,261

$

2,103,947