Fair value measurement (Tables)

12 Months Ended

Dec. 31, 2025

Fair value measurement

Schedule of fair value measurement of liabilities

The following table provides the fair value measurement hierarchy of the Group’s assets and liabilities:


				Fair value measurement using:
				Quoted prices
				in active		Observable		Unobservable
		Carrying		markets		inputs		inputs
		value		(Level 1)		(Level 2)		(Level 3)
		US$(000)		US$(000)		US$(000)		US$(000)

As of December 31, 2025 -
Assets and liabilities measured at fair value:
Fair value of account receivable (subject to provisional pricing)		384,171		—		384,171		—
Contingent consideration liability		39,347		—		39,347		—
Fair value of liabilities at amortized cost:
Financial obligations		702,255		—		763,478		—

As of December 31, 2024 -
Assets and liabilities measured at fair value:
Fair value of account receivable (subject to provisional pricing)		110,072		—		110,072		—
Contingent consideration liability		28,271		—		28,271		—

Fair value of liabilities at amortized cost:
Financial obligations		619,309		—		619,309		—

Schedule of quantitative information about the significant unobservable inputs used in level 3 fair value measurements

The following table summarizes the quantitative information about the significant unobservable inputs used in level 3 fair value measurements:


		Fair value as of
		December 31,		Unobservable				Relationship of unobservable
Description		2025		inputs		Range of inputs		inputs to fair value
Contingent consideration liability		39,347		Rate before taxes		12.41	%	A 10% increase / decrease in the discount rate would result in an increase / decrease in fair value of US$2.8 million.

				Expected annual production DMT				If expected sales were to increase or decrease by 10%, fair value would increase / decrease by US$3.9 million.