Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) [Abstract]
Net sales	$ 2,854,670	$ 4,559,135	$ 5,320,298	$ 8,608,659
Cost of goods sold	2,469,356	2,657,096	4,761,882	6,131,649
Gross profit	385,314	1,902,039	558,416	2,477,010
Operating expense:
Research and development	227,571	333,631	427,879	596,256
General and administrative	595,645	518,016	1,270,631	1,077,473
Total operating expense	823,216	851,647	1,698,510	1,673,729
Income (loss) from operations	(437,902)	1,050,392	(1,140,094)	803,281
Other income (expense):
Interest income	18,712	12,126	34,114	23,523
Foreign currency transaction gain (loss)	342	(9,224)	1,937	(22,959)
Miscellaneous income, net	14,564	(8,721)	973,880	11,019
Interest expense	(1,804)	(3,939)	(3,966)	(8,354)
Total other income (expense), net	31,814	(9,758)	1,005,965	3,229
Income (loss) before provision for income taxes, and non-controlling interest	(406,088)	1,040,634	(134,129)	806,510
Provision for (benefit from) income tax	30,880	31,826	30,880	72,583
Net income (loss) before non-controlling interest	(436,968)	1,008,808	(165,009)	733,927
Non-controlling interest loss	(95,652)	391	(236,167)	(498)
Net income (loss)	(341,316)	1,008,417	71,158	734,425
Comprehensive income statement:
Net income (loss)	(436,968)	1,008,808	(165,009)	733,927
Foreign currency translation loss	(757,905)	11,433	(985,896)	(546,707)
Total comprehensive income (loss)	$ (1,194,873)	$ 1,020,241	$ (1,150,905)	$ 187,220
Earnings per share - Basic
Net loss before non-controlling interest (in dollars per share)	$ (0.01)	$ 0.03	$ 0.00	$ 0.02
Non-controlling interest (in dollars per share)	0.00	0.00	(0.01)	0.00
Earnings per share to stockholders (in dollars per share)	(0.01)	0.03	(0.01)	0.02
Earnings per share - Diluted
Net loss before non-controlling interest (in dollars per share)	(0.01)	0.03	0.00	0.02
Non-controlling interest (in dollars per share)	0.00	0.00	(0.01)	0.00
Earnings per share to stockholders (in dollars per share)	$ (0.01)	$ 0.03	$ (0.01)	$ 0.02
Weighted average number of common shares outstanding:
Basic (in shares)	35,030,339	35,030,339	35,030,339	35,030,339
Diluted (in shares)	35,030,339	35,030,339	35,030,339	35,030,339