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Stock-based compensation (Tables)

12 Months Ended

Dec. 31, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of restricted share units

​

​	​	​
Restricted shares grants	​	Shares
Non-vested as of January 1, 2022	​	—
Granted	​	296,474
Vested	​	—
Canceled	​	—
Non-vested as of December 31, 2022	​	296,474
Granted	​	113,984
Vested	​	(66,111)
Canceled	​	(87,611)
Non-vested as of December 31, 2023	​	256,736

​

​	​	​	​	​	​
​	Outstanding Restricted Share
​	​	​	​	​	Average Remaining
​	Fair Value per share	​	Number	​	Amortization Period (Years)
$	3.90	​	122,500	​	1.08
$	2.52	​	3,889	​	1.25
$	2.20	​	16,363	​	1.00
$	2.08	​	96,635	​	2.25
$	2.08	​	17,349	​	2.25
​	​	​	256,736	​	​

Schedule of share option activities

​

​	​	​	​	​	​	​	​	​	​	​
​		​		​		Weighted		Weighted		​
​	​	​	​	Weighted	​	Average	​	Average	​	​
​	​	​	​	Average	​	Grant date	​	Remaining	​	Average
​	​	Number of	​	Exercise	​	Fair	​	Contractual	​	Intrinsic
​	​	Options	​	Price	​	Value	​	Term	​	value
​	​	​	​	USD	​	USD	​	Years	​	USD
Share options outstanding at December 31, 2022		380,745	​	2.54	​	1.19		9.35		—
Granted		158,976		2.08		1.26		9.75		—
Forfeited	​	183,722	​	—	​	—	​	—	​	—
Exercised	​	—	​	—	​	—	​	—	​	—
Expired	​	—	​	—	​	—	​	—	​	—
Share options outstanding at December 31, 2023		355,999	​	3.48	​	1.77		8.29	​	—
Vested and exercisable at December 31, 2023		196,079		2.57		1.21		8.29		—

Schedule of assumptions used to value options granted

​

​	​	​	​	​	​	​	​
​		For the		​	For the
​	​	Year Ended		​	Year Ended		​
​	​	December 31,		​	December 31,
​	​	2023		​	2022
​	​	​		​	​		​
Risk-free interest rate		​	3.65	%	​	2.49 - 2.92	%
Expected volatility range		​	63.36	%	​	40.30 - 45.67	%
Fair market value per ordinary share as at grant dates	​	$	2.08	​	$	2.26 - 3.07	​

Schedule of share-based compensation expense

​

​	​	​	​	​	​
​	​	For the Year Ended
​	December 31,
​		2023	​		2022
​	​	USD	​	​	USD
Selling and distribution expenses	$	124,994	​	$	108,694
General and administrative expenses		292,984	​		274,878
Total share-based compensation expenses	$	417,978	​	$	383,572

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Tabular disclosure of the changes in outstanding nonvested restricted stock units.

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