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Property and Equipment
 3 Months Ended
Mar. 31, 2021
Property, Plant and Equipment [Abstract]  
PROPERTY AND EQUIPMENT

5. PROPERTY AND EQUIPMENT


Property and equipment as of March 31, 2021 and December 31, 2020 are summarized as follows:


   March 31,
2021		   December 31,
2020		 
   (Unaudited)     
Land  $390,088   $395,645 
Buildings and leasehold improvements   2,231,712    2,233,573 
Machinery and equipment   992,882    994,544 
Office equipment   187,181    189,760 
    3,801,863    3,813,522 
Less: accumulated depreciation   (3,296,911)   (3,298,688)
Property and equipment, net  $504,952   $514,834 

Depreciation expenses were $2,928 and $11,174 for three months ended March 31, 2021 and 2020, respectively.