Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement [Abstract]
Revenue	$ 3,770,723	$ 2,569,408	$ 5,534,678	$ 5,498,681
Cost of revenue	2,620,925	2,405,860	4,190,441	4,678,603
Gross profit	1,149,798	163,548	1,344,237	820,078
Operating expenses:
Selling expenses	727,642	505,866	1,053,737	984,557
General and administrative expenses	322,445	334,550	711,004	763,367
Research and development expenses	30,044	66,008	78,863	135,926
Bad debt (benefit) expense	(5,318)	10,092	24,928	23,404
Total operating expenses	1,074,813	916,516	1,868,532	1,907,254
Income (loss) from operations	74,985	(752,968)	(524,295)	(1,087,176)
Other income (expense):
Interest income	1,212	12,119	1,598	15,376
Interest expense	(63,144)	(97,254)	(125,147)	(184,034)
Net other expense	(61,932)	(85,135)	(123,549)	(168,658)
Income (loss) before income taxes	13,053	(838,103)	(647,844)	(1,255,834)
Income tax expense
Net income (loss)	13,053	(838,103)	(647,844)	(1,255,834)
Other comprehensive income - foreign currency translation adjustment	5,796	(811,164)	(191,236)	24,701
Comprehensive income (loss)	$ 18,849	$ (1,649,267)	$ (839,080)	$ (1,231,133)
Earnings (loss) per share:
Basic and diluted	$ 0	$ (0.02)	$ (0.01)	$ (0.03)
Weighted average shares outstanding	43,579,557	43,579,557	43,579,557	43,579,557