CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Assets
Allowance for doubtful accounts receivble	$ 56,135	$ 12,455
Shareholders' equity
Preferred stock, shares par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, shares par value	$ 0.001	$ 0.001
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares outstanding	12,798,797	11,517,163
Common stock, shares issued	12,818,797	11,537,163