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4. PROPERTY AND EQUIPMENT, NET (Tables)
12 Months Ended
Dec. 31, 2019
Property, Plant and Equipment [Abstract]  
Property and equipment
    December 31,  
    2019     2018  
Laboratory equipment   $ 44,454     $ 13,980  
Tooling     59,004       22,683  
Computer equipment     83,368       12,608  
Furniture, fixtures and improvements     128,782       9,595  
      315,608       58,866  
Accumulated depreciation     (72,732 )     (28,493 )
    $ 242,876     $ 30,373