REVENUE (Details - Contract assets and liabilities) - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Contract Asset [Member]
Costs and estimated earnings in excess of billings on uncompleted contracts	$ 1,567,212	$ 1,439,844
Contract Liability [Member]
Billings in excess of costs and estimated earnings on uncompleted contracts	$ 2,672,244	$ 2,215,212