Segment information (Tables)

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Segment information

	Year ended December 31,
	2019			2018			2017
	US$’000			US$’000			US$’000
Revenue
Trading and manufacturing		11,877			13,770			11,001
Engineering		5,522			6,334			6,349
		17,399			20,104			17,350
Operating loss
Trading and manufacturing		(102	)		(119	)		(153	)
Engineering		(158	)		(821	)		(306	)
Unallocated corporate expenses		(180	)		(119	)		(115	)
		(440	)		(1,059	)		(574	)

	Year ended December 31,
	2019		2018		2017
	US$’000		US$’000		US$’000
Depreciation:
Trading and manufacturing		54		43		41
Engineering		15		17		20
		69		60		61
Capital expenditures, gross
Trading and manufacturing		17		79		13
Engineering		4		6		5
		21		85		18

	December 31,
	2019		2018
	US$’000		US$’000
Assets
Trading and manufacturing		9,843		9,951
Engineering		12,370		13,114
		22,213		23,065
Liabilities
Trading and manufacturing		4,319		4,233
Engineering		2,557		3,287
		6,876		7,520

Geographical analysis of revenue and assets

               Geographical analysis of revenue by customer location is as follows:

	Year ended December 31,
	2019		2018		2017
	US$’000		US$’000		US$’000
Revenue -
The PRC		6,886		8,026		7,740
Hong Kong		10,169		11,169		9,270
Others		344		909		340
		17,399		20,104		17,350

Geographical analysis of long-lived assets is as follows:

	December 31,
	2019		2018
	US$’000		US$’000
Hong Kong		478		504
The PRC		222		250
		700		754

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

Major suppliers and customers

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

	Year ended December 31,
	2019			2018			2017
Supplier A		53	%		55	%		45	%
Supplier B		7	%		8	%		10	%
Supplier C		6	%		7	%		9	%
Supplier D		6	%		7	%		4	%

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

	Year ended December 31,
	2019			2018			2017
Customer A		19	%		15	%		10	%
Customer B		10	%		-			7	%
Customer C		5	%		-			-
Customer D		-			7	%		-
Customer E		-			-			5	%
Customer F		-			-			5	%