Note 14 - The Financing and Warrant Liabilities (Tables)

6 Months Ended

Jun. 30, 2024

Notes Tables

Schedule of Warrant Liabilities [Table Text Block]

							Change in Fair Value (gain)/loss
	As of June 30, 2024		As of March 31, 2024		As of December 31, 2023		Six Months Ended June 30, 2024		Three Months Ended June 30, 2024
	(US$’000)		(US$’000)		(US$’000)		(US$’000)		(US$’000)
Warrants issued in the 2021 Financing:
--Investor Warrants		-		-		-		-		-
--Placement Agent Warrants		-		-		-		-		-
Warrants issued in the 2020 Financing:
--Investor Warrants		-		-		-		-		-
--Placement Agent Warrants		-		-		-		-		-
Warrant Liabilities		-		-		-		-		-

							Change in Fair Value (gain)/loss
		As of June 30, 2023		As of March 31, 2023		As of December 31, 2022	Six Months Ended June 30, 2023			Three Months Ended June 30, 2023
	(US$’000)		(US$’000)		(US$’000)		(US$’000)			(US$’000)
Warrants issued in the 2021 Financing:
--Investor Warrants		12		49		86		(74	)		(37	)
--Placement Agent Warrants		1		5		9		(8	)		(4	)
Warrants issued in the 2020 Financing:
--Investor Warrants		-		25		76		(76	)		(25	)
--Placement Agent Warrants		-		5		14		(14	)		(5	)
Warrant Liabilities		13		84		185		(172	)		(71	)

Schedule of Warrant Activity [Table Text Block]

	Warrant Outstanding						Warrant Exercisable
	Number of underlying shares		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Number of underlying shares		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price
Balance, January 1, 2024		594,168		0.63	$	18.50		594,168		0.63	$	18.50
Granted/Vested		-						-
Exercised		-						-
Balance, June 30, 2024 (Unaudited)		594,168		0.13	$	18.50		1,000,343		0.13	$	18.50

Warrant [Member]

Notes Tables

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

	2021 Investors Warrants									2021 Placement Agent Warrants
	June 30, 2024			March 31, 2024			December 31, 2023			June 30, 2024			March 31, 2024			December 31, 2023
Stock price	$	0.76		$	1.02		$	0.83		$	0.76		$	1.02		$	0.83
Years to maturity		0.1			0.4			0.6			0.1			0.4			0.6
Risk-free interest rate		5.47	%		5.39	%		5.13	%		5.47	%		5.39	%		5.13	%
Dividend yield		-			-			-			-			-			-
Expected volatility		75	%		111	%		82	%		75	%		111	%		82	%
Exercise Price	$	17.95		$	17.95		$	17.95		$	22.4375		$	22.4375		$	22.4375
Fair value of the warrant	$	-		$	-		$	-		$	-		$	-		$	-
Warrant Liabilities (US$’000)	$	-		$	-		$	-		$	-		$	-		$	-

	2021 Investors Warrants									2021 Placement Agent Warrants
	June 30, 2023			March 31, 2023			December 31, 2022			June 30, 2023			March 31, 2023			December 31, 2022
Stock price	$	1.27		$	1.70		$ 0.46#			$	1.27		$	1.70		$ 0.46#
Years to maturity		1.13			1.38			1.63			1.13			1.38			1.63
Risk-free interest rate		5.34	%		4.44	%		4.625	%		5.34	%		4.44	%		4.625	%
Dividend yield		-			-			-			-			-			-
Expected volatility		112	%		113	%		99.74	%		112	%		113	%		99.74	%
Exercise Price	$	17.95		$	17.95		$ 3.59#			$	22.4375		$	22.4375		$ 4.4875#
Fair value of the warrant	$	0.0232		$	0.0937		$	0.0329		$	0.0157		$	0.0727		$	0.0256
Warrant Liabilities (US$’000)	$	12		$	49		$	86		$	1		$	5		$	9

	2020 Investors Warrants									2020 Placement Agent Warrants
	June 30, 2023			March 31, 2023			December 31, 2022			June 30, 2023			March 31, 2023			December 31, 2022
Stock price	$	1.27		$	1.70		$ 0.46#			$	1.27		$	1.70		$ 0.46#
Years to maturity		0.45			0.70			0.95			0.45			0.70			0.95
Risk-free interest rate		5.46	%		4.80	%		4.716	%		5.46	%		4.80	%		4.716	%
Dividend yield		-			-			-			-			-			-
Expected volatility		94	%		125	%		115.61	%		94	%		125	%		115.61	%
Exercise Price	$	10.15		$	10.15		$ 2.03#			$	10.15		$	10.15		$ 2.03#
Fair value of the warrant	$	0.000		$	0.0731		$	0.0439		$	0.000		$	0.0760		$	0.0456
Warrant Liabilities (US$’000)	$	-		$	25		$	76		$	-		$	5		$	14