Quarterly report pursuant to Section 13 or 15(d)

C. REVENUE (Details - Contract assets and liabilities)

v3.19.3
C. REVENUE (Details - Contract assets and liabilities) - USD ($)
9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Revenue from Contract with Customer [Abstract]      
Contract assets $ 423,303   $ 314,749
Contract liabilities 1,120,975   1,232,623
Net contract liabilities 697,672   $ 917,874
Increase in contract assets 108,554 $ 7,292  
Decrease in contract liabilities (111,648) $ (370,209)  
Total variance in contract assets and liabilties $ (220,202)