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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Concentration risks (Details)			1 Months Ended	3 Months Ended		6 Months Ended
	May 14, 2025	Sep. 13, 2024	Apr. 30, 2025	Jun. 30, 2025 USD ($) customer	Jun. 30, 2024 USD ($) customer	Dec. 31, 2025	Jun. 30, 2025 USD ($) customer	Jun. 30, 2024 USD ($) customer
Concentration risks
Aggregate dollar amount of net sales				$ 10,445,733	$ 6,029,364		$ 18,740,906	$ 13,628,727
Syringes and needles | China
Concentration risks
Tariff percentage		100.00%
Syringes and needles | China | Forecast
Concentration risks
Tariff percentage						130.00%
Other products
Concentration risks
Aggregate dollar amount of net sales				$ 19,131	$ 17,388		$ 26,815	$ 25,366
Other products | China
Concentration risks
Tariff percentage	30.00%		145.00%
Other products | China | Forecast
Concentration risks
Tariff percentage						30.00%
Net Sales | Customer Concentration Risk
Concentration risks
Number of significant customers | customer				3	4		3	3
Net Sales | Customer Concentration Risk | Significant customers
Concentration risks
Aggregate dollar amount of net sales				$ 6,000,000	$ 3,800,000		$ 10,300,000	$ 7,300,000
Concentration risk, percentage				57.20%	63.00%		55.00%	53.60%
Cost of Sales, Manufacturing | Supplier Concentration Risk | China
Concentration risks
Concentration risk, percentage				62.00%	92.00%		62.00%	91.00%

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