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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Revenues $ 41,220,406 $ 38,502,482
Cost of revenues 24,641,425 23,824,028
Gross profit 16,578,981 14,678,454
Selling and marketing expenses 7,365,912 6,838,745
General and administrative expenses 8,273,558 8,772,965
Share-based compensation expenses 10,194 16,910
Impairment of intangible assets 0 236,860
Depreciation and amortization expenses 705,932 720,035
Total selling, general and administrative expenses 16,355,596 16,585,515
Income (loss) from continuing operations 223,385 (1,907,061)
Other (expense) income:    
Other income 13,269 24,005
Interest expense, net (13,616) (39,814)
Total other expense, net (347) (15,809)
Income (loss) from continuing operations before taxes 223,038 (1,922,870)
(Provision) Benefit for income taxes (47,391) 455,006
Income (loss) from continuing operations 175,647 (1,467,864)
Discontinued operations    
Income from discontinued operations 0 988,525
Gain on sale of discontinued operations 0 10,307,155
Provision for income taxes 0 (3,033,590)
Income from discontinued operations 0 8,262,090
Net income $ 175,647 $ 6,794,226
Continuing operations (in Dollars per share) $ 0.04 $ (0.33)
Discontinued operations (in Dollars per share) 0 1.84
Net income (in Dollars per share) 0.04 1.51
Continuing operations (in Dollars per share) 0.04 (0.33)
Discontinued operations (in Dollars per share) 0 1.84
Net income (in Dollars per share) $ 0.04 $ 1.51
Basic (in Shares) 4,501,271 4,500,827
Diluted (in Shares) 4,501,271 4,500,827
Product [Member]    
Revenues $ 7,661,580 $ 6,876,682
Cost of revenues 4,608,889 4,179,592
Service Net [Member]    
Revenues 33,558,826 31,625,800
Cost of revenues $ 20,032,536 $ 19,644,436