Annual report pursuant to Section 13 and 15(d)

C. REVENUE (Details - Contract assets and liabilities)

v3.20.1
C. REVENUE (Details - Contract assets and liabilities) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Revenue from Contract with Customer [Abstract]      
Contract assets $ 188,120 $ 314,749  
Contract liabilities 764,184 1,232,623 $ 0
Net contract liabilities 576,064 917,874  
Increase in contract assets 126,629 34,251  
Decrease in contract liabilities (468,439) $ 329,243  
Total variance in contract assets and liabilties $ (341,810)