Segment information (Tables)

12 Months Ended

Dec. 31, 2020

Segment Reporting [Abstract]

Segment information

	Year ended December 31,
	2020			2019			2018
	US$’000			US$’000			US$’000
Revenue
Trading and manufacturing		9,476			11,877			13,770
Engineering		3,881			5,522			6,334
		13,357			17,399			20,104
Operating loss
Trading and manufacturing		(488	)		(102	)		(119	)
Engineering		(1,027	)		(158	)		(821	)
Unallocated corporate expenses		(186	)		(180	)		(119	)
		(1,701	)		(440	)		(1,059	)

	Year ended December 31,
	2020		2019		2018
	US$’000		US$’000		US$’000
Depreciation:
Trading and manufacturing		39		54		43
Engineering		10		15		17
		49		69		60
Capital expenditures, gross
Trading and manufacturing		2		17		79
Engineering		9		4		6
		11		21		85

	December 31,
	2020		2019
	US$’000		US$’000
Assets
Trading and manufacturing		7,877		9,843
Engineering		12,218		12,370
		20,095		22,213
Liabilities
Trading and manufacturing		2,645		4,319
Engineering		2,987		2,557
		5,632		6,876

Geographical analysis of revenue and assets

(ii)             Geographical analysis of revenue by customer location is as follows:

	Year ended December 31,
	2020		2019		2018
	US$’000		US$’000		US$’000
Revenue -
The PRC		5,072		6,886		8,026
Hong Kong		8,024		10,169		11,169
Others		261		344		909
		13,357		17,399		20,104

(iii)             Long-lived assets (1)

Geographical analysis of long-lived assets is as follows:

	December 31,
	2020		2019
	US$’000		US$’000
Hong Kong		47		478
The PRC		212		222
		259		700

(1)             Long-lived assets represent property, plant and equipment, net.

Major suppliers and customers

(iv)             Major suppliers

Details of individual suppliers accounting for more than 5% of the Group’s purchases are as follows:

	Year ended December 31,
	2020			2019			2018
Supplier A		30	%		53	%		55	%
Supplier B		12	%		-			-
Supplier C		10	%		7	%		8	%
Supplier D		9	%		6	%		7	%
Supplier E		6	%		6	%		7	%
Supplier F		5	%		-			-

(v)             Major customers

Details of individual customers accounting for more than 5% of the Group’s revenue are as follows:

	Year ended December 31,
	2020			2019			2018
Customer A		9	%		19	%		15	%
Customer B		8	%		-			-
Customer C		6	%		10	%		-
Customer D		-			5	%		-
Customer E		-			-			7	%