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Inventories
6 Months Ended
Jun. 30, 2019
Inventory Disclosure [Abstract]  
Inventories

3.

Inventories


Inventories consisted of the following at June 30, 2019 and December 31, 2018, respectively:


 

 

June 30,

2019

 

December 31,

2018

 

 

 

(Unaudited)

 

 

 

Raw materials

 

$

1,183,644

 

$

1,053,147

 

Finished goods

 

 

409,201

 

 

257,623

 

Valuation allowance

 

 

(432,009

)

 

(476,062

)

Total inventory, net

 

$

1,160,836

 

$

834,708