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Inventories
12 Months Ended
Dec. 31, 2020
Inventory Disclosure [Abstract]  
INVENTORIES
6.INVENTORIES

Inventories as of December 31, 2020 and 2019 consist of the following:


   2020   2019 
Raw materials  $-   $25,985 
Work in progress   -    779 
Finished goods   147,533    1,060,615 
Total inventories  $147,533   $1,087,379 
Less: inventory impairment loss   (58,930)   (2,363)
Inventories, net   88,603    1,085,016 

During the years ended December 31, 2020, 2019 and 2018, write-downs of inventories to lower of cost or net realizable value of $58,930, $2,363 and $0, respectively, were charged to costs of revenue in relation to the Company’s operations. Subsequent sale of impaired inventory items is recorded as credits to inventory write-downs previously recorded.