Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Operating activities
Net income	$ 1,754,741	$ 1,793,334
Adjustments to reconcile net income to net cash:
Stock based compensation	116,092	66,318
Depreciation and amortization	286,616	540,079
Loss on investment	84,066	15,086
Decrease in deferred tax asset	985,495	303,793
Write down of inventory	(51,346)
Gain on involuntary disposition	(2,043,614)
Changes in non-cash working capital items:
(Increase) Decrease in accounts receivable	912,056	(1,199,267)
(Increase) Decrease in inventories	(887,339)	(506,278)
(Increase) Decrease in prepaid expenses	(23,758)	15,793
Increase (Decrease) in accounts payable and accrued liabilities	(407,555)	90,111
Increase (Decrease) in taxes payable	207,729	600,629
Increase (Decrease) deferred revenue	109,242	55,628
Cash provided by operating activities	1,042,425	1,775,226
Investing activities
Long term deposits	7,980	(15,925)
Investment	25,000	(87,500)
Proceed from insurance	3,366,889
Net purchase of property, equipment and leaseholds	(426,480)	(114,270)
Cash used in investing activities	2,973,389	(217,695)
Financing activities
Draw from short term line of credit		50,000
Loan repayment	(201,193)	(201,193)
Repurchase of common stock		(1,575,000)
Proceeds of issuance of common stock	156,020	32,600
Cash used in financing activities	(45,173)	(1,693,593)
Effect of exchange rate changes on cash	471,431	107,390
Inflow (outflow) of cash	4,442,072	(28,672)
Cash and cash equivalents, beginning	2,470,066	2,498,738
Cash and cash equivalents, ending	6,912,138	2,470,066
Supplemental disclosure of cash flow information:
Income taxes paid	833,766	452,654
Interest paid	$ 43,003	$ 41,699