Annual report pursuant to Section 13 and 15(d)

C. REVENUE (Details - Contract assets and liabilities)

v3.21.1
C. REVENUE (Details - Contract assets and liabilities) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Revenue from Contract with Customer [Abstract]    
Contract assets $ 104,989 $ 188,120
Contract liabilities 1,052,367 764,184
Net contract liabilities 947,378 576,064
Decrease in contract assets (83,131) (126,629)
Increase in contract liabilities 288,183 $ (468,439)
Total variance in contract assets and liabilties $ 371,314