Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Revenues		$ 6,316	$ 7,652
Cost of revenues		6,630	7,518
Gross (loss)/profit		(314)	134
Operating expenses
Sales and marketing expenses		48	69
General and administrative expenses		932	1,548
Research and development expenses		18	68
Total operating expenses		998	1,685
Loss from operations		(1,312)	(1,551)
Other income/(expenses)
Interest income		72	46
Other expenses, net		(5)	(9)
Change in fair value of warrant liabilities		101	795
Total other income		168	832
Income tax benefit		1	2
Net income (loss)		(1,143)	(717)
Net loss		(1,143)	(717)
Foreign currency translation loss		(81)	(22)
Comprehensive loss		$ (1,224)	$ (739)
Loss per common share
Basic and diluted** (in dollars per share)	[1]	$ (0.16)	$ (0.10)
Weighted average number of common shares outstanding:
Basic and diluted** (in shares)	[1]	7,174,506	7,079,962
Unrelated Parties [Member]
Other income/(expenses)
Loss before income tax benefit		$ (1,144)	$ (719)
Related Parties [Member]
Other income/(expenses)
Net income (loss)		(1,143)	(717)
Net loss		$ (1,143)	$ (717)

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