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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue recognition (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) item	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Revenue recognition
Estimated contractual allowance	$ 6,200,000	$ 3,400,000
Period for return of incorrect shipments	10 days
Number of times overstocking returns are limited | item	2
Period for return of product due to overstock	12 months
Maximum percentage of distributor's total purchase for the prior 12-month period	1.00%
Sales, net	$ 188,382,454	81,862,453	$ 41,797,179
Syringes
Revenue recognition
Sales, net	176,330,309	68,731,795	35,638,427
Blood Collection Products
Revenue recognition
Sales, net	2,248,150	2,363,887	2,715,697
Easy Point Needles
Revenue recognition
Sales, net	9,636,440	9,629,173	2,979,005
Other Products
Revenue recognition
Sales, net	167,555	1,137,598	464,050
U.S. sales
Revenue recognition
Sales, net	53,888,136	42,169,463	31,897,924
U.S. sales | Syringes
Revenue recognition
Sales, net	42,770,403	30,446,858	26,722,414
U.S. sales | Blood Collection Products
Revenue recognition
Sales, net	2,171,680	2,116,108	2,130,767
U.S. sales | Easy Point Needles
Revenue recognition
Sales, net	8,892,712	9,542,122	2,970,374
U.S. sales | Other Products
Revenue recognition
Sales, net	53,341	64,375	74,369
U.S. government
Revenue recognition
Sales, net	113,662,440	31,634,343
U.S. government | Syringes
Revenue recognition
Sales, net	113,662,440	31,634,343
North and South America (excluding U.S)
Revenue recognition
Sales, net	14,561,236	6,893,150	8,248,990
North and South America (excluding U.S) | Syringes
Revenue recognition
Sales, net	14,345,874	5,733,116	7,863,796
North and South America (excluding U.S) | Blood Collection Products
Revenue recognition
Sales, net	4,800	8,450	6,313
North and South America (excluding U.S) | Easy Point Needles
Revenue recognition
Sales, net	100,848	86,816	7,996
North and South America (excluding U.S) | Other Products
Revenue recognition
Sales, net	109,714	1,064,768	370,885
Other international sales
Revenue recognition
Sales, net	6,270,642	1,165,497	1,650,265
Other international sales | Syringes
Revenue recognition
Sales, net	5,551,592	917,478	1,052,217
Other international sales | Blood Collection Products
Revenue recognition
Sales, net	71,670	239,329	578,617
Other international sales | Easy Point Needles
Revenue recognition
Sales, net	642,880	235	635
Other international sales | Other Products
Revenue recognition
Sales, net	$ 4,500	$ 8,455	$ 18,796

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For an unclassified balance sheet, a valuation allowance for payables due by the company that are expected to be not payable.

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