Quarterly report pursuant to Section 13 or 15(d)

REVENUE (Details - Contract assets and liabilities)

v3.21.2
REVENUE (Details - Contract assets and liabilities) - USD ($)
Sep. 30, 2021
Dec. 31, 2020
Revenue from Contract with Customer [Abstract]    
Contract assets $ 181,761 $ 104,989
Contract liabilities 1,285,192 1,052,367
Net contract liabilities $ 1,103,431 $ 947,378