Property, plant and equipment (Tables)

12 Months Ended

Dec. 31, 2025

Disclosure of detailed information about property, plant and equipment [abstract]

Schedule of property, plant and equipment including right-of-use assets


	Right-of-use assets (note (a))		Leasehold improvements		Fixtures and furniture		Office and lab equipment		Computer equipment		Motor vehicles		Manufacturing equipment		Total
Cost:
At January 1, 2024	$	11,115	$	5,877	$	45	$	8,869	$	219	$	8	$	—	$	26,133
Additions	3,094		375		91		484		5		—		51		4,100
Additions from acquisition (note 33(III))	2,511		25		2		556		43		—		—		3,137
Disposals	(162)		(2)		—		(1,921)		—		(8)		—		(2,093)
Written off	(1,681)		(210)		(53)		(950)		(45)		—		—		(2,939)
Exchange differences	(722)		(420)		(19)		(262)		(2)		—		—		(1,425)
At December 31, 2024 and January 1, 2025	14,155		5,645		66		6,776		220		—		51		26,913
Additions	37		—		—		208		—		—		—		245
Disposal of a subsidiary (note 34)	(4,583)		(796)		(14)		(4,347)		—		—		—		(9,740)
Disposals	—		(1,153)		—		(160)		—		—		—		(1,313)
Written off	(28)		—		—		(1,852)		—		—		—		(1,880)
Exchange differences	134		18		1		246		—		—		—		399
At December 31, 2025	$	9,715	$	3,714	$	53	$	871	$	220	$	—	$	51	$	14,624
Accumulated depreciation:
At January 1, 2024	$	9,059	$	4,824	$	15	$	6,312	$	140	$	5	$	—	$	20,355
Charge for the year	2,052		795		1		1,119		39		—		10		4,016
Eliminated on disposal	(128)		(1)		—		(1,878)		—		(6)		—		(2,013)
Written off	(1,681)		(149)		(20)		(531)		—		—		—		(2,381)
Exchange differences	(266)		(366)		62		(304)		(2)		1		—		(875)
At December 31, 2024 and January 1, 2025	9,036		5,103		58		4,718		177		—		10		19,102
Charge for the year	1,936		267		1		433		33		—		24		2,694
Eliminated on disposal of a subsidiary (note 34)	(2,761)		(740)		(10)		(2,547)		—		—		—		(6,058)
Eliminated on disposal	—		(1,153)		—		(160)		—		—		—		(1,313)
Written off	(28)		—		—		(1,735)		—		—		—		(1,763)
Exchange differences	37		31		2		129		—		—		—		199
At December 31, 2025	$	8,220	$	3,508	$	51	$	838	$	210	$	—	$	34	$	12,861
Carrying amounts:
At January 1, 2024	$	2,056	$	1,053	$	30	$	2,557	$	79	$	3	$	—	$	5,778
At December 31, 2024	$	5,119	$	542	$	8	$	2,058	$	43	$	—	$	41	$	7,811
At December 31, 2025	$	1,495	$	206	$	2	$	33	$	10	$	—	$	17	$	1,763

Schedule of net book value of right-of-use assets

The analysis of the carrying amount of right-of-use assets by class of underlying asset is as follows:


	Note	2025		2024
Properties leased for own use, carried at depreciated cost	(i)	$	1,491	$	5,101
Office equipment, carried at depreciated cost	(ii)	4		18
		$	1,495	$	5,119

Schedule of analysis of expense items in relation to leases

The analysis of expense items in relation to leases recognized in profit or loss is as follows:


	2025		2024		2023
Depreciation charge of right-of-use assets by class of underlying asset:
- Properties leased for own use	$	1,922	$	2,038	$	2,772
- Office equipment	14		14		14
	$	1,936	$	2,052	$	2,786
Interest on lease liabilities (notes 8(a) and 10(c))	$	258	$	203	$	242
Expense relating to short-term leases or leases of low-value assets	284		366		137

Schedule of amounts included in the consolidated statement of cash flows

Amounts included in the consolidated statement of cash flows for leases comprise the following:


	2025		2024		2023
Within operating cash flows	$	(284)	$	(366)	$	(137)
Within financing cash flows	(2,689)		(2,766)		(3,476)
	$	(2,973)	$	(3,132)	$	(3,613)