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7. SEGMENT REPORTING (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Sales, net	$ 6,758,367	$ 5,461,039	$ 17,547,990	$ 15,814,950
Cost of sales	2,694,345	1,918,868	6,704,974	5,660,429
Gross margin	4,064,022	3,542,171	10,843,016	10,154,521
Selling expenses	1,721,419	1,627,497	5,083,245	4,640,062
Contribution margin	$ 2,342,603	$ 1,914,674	$ 5,759,771	$ 5,514,459
Percent of sales	100.00%	100.00%	100.00%	100.00%
Direct Sales
Sales, net	$ 2,383,256	$ 2,333,721	$ 6,458,908	$ 6,237,364
Cost of sales	703,331	542,154	1,735,974	1,580,697
Gross margin	1,679,925	1,791,567	4,722,934	4,656,667
Selling expenses	1,175,802	1,073,089	3,406,569	3,089,948
Contribution margin	$ 504,123	$ 718,478	$ 1,316,365	$ 1,566,719
Percent of sales	35.30%	42.70%	36.80%	39.40%
Distributor Sales
Sales, net	$ 4,375,111	$ 3,127,318	$ 11,089,082	$ 9,577,586
Cost of sales	1,991,014	1,376,714	4,969,000	4,079,732
Gross margin	2,384,097	1,750,604	6,120,082	5,497,854
Selling expenses	545,617	554,408	1,676,676	1,550,114
Contribution margin	$ 1,838,480	$ 1,196,196	$ 4,443,406	$ 3,947,740
Percent of sales	64.70%	57.30%	63.20%	60.60%

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