Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues		$ 9,181	$ 7,216	$ 25,317	$ 21,813
Cost of revenues		9,185	7,267	25,746	21,811
Gross (loss)/ profit		(4)	(51)	(429)	2
Operating expenses
Sales and marketing expenses		55	72	148	219
General and administrative expenses		1,547	1,651	3,659	5,697
Research and development expenses		0	57	18	181
Total operating expenses		1,602	1,780	3,825	6,097
Loss from operations		(1,606)	(1,831)	(4,254)	(6,095)
Other income/(expenses)
Interest income		79	21	230	96
Other expenses, net		(6)	(5)	(20)	(33)
Impairment on long-term investment		2	0	(207)	0
Change in fair value of warrant liabilities		13	(1,023)	185	759
Total other income/(expenses)		88	(1,007)	188	822
Loss before income tax benefit/(expense) and noncontrolling interests		(1,518)	(2,838)	(4,066)	(5,273)
Income tax benefit/(expenses)		(2)	(2)	0	2
Net income (loss)		(1,520)	(2,840)	(4,066)	(5,271)
Net income (loss)		(1,520)	(2,840)	(4,066)	(5,271)
Foreign currency translation adjustment		(39)	93	163	76
Comprehensive loss		$ (1,559)	$ (2,747)	$ (3,903)	$ (5,195)
Loss per common share
Basic and diluted** (in dollars per share)	[1]	$ (0.21)	$ (0.4)	$ (0.57)	$ (0.74)
Weighted average number of common shares outstanding:
Basic and diluted** (in shares)	[1]	7,204,506	7,174,506	7,191,649	7,123,411

[1] Retrospectively restated for effect of the 1-for-5 reverse stock split effective on January 18, 2023, see Note 4(g).