| Schedule of assets and liabilities measured at fair value |
| | | | | | | | | | | December 31, 2025 | | | | | Quoted prices in active markets | | Significant observable inputs | | Significant unobservable inputs | | | Total | | (Level 1) | | (Level 2) | | (Level 3) | | | US$'000 | | US$'000 | | US$'000 | | US$'000 | Property, plant and equipment (Note 8): | | | | | | | | | Property, plant and equipment | | 44,169 | | — | | 44,169 | | — | Other financial assets (Note 9): | | | | | | | | | Equity securities | | 1,647 | | 1,647 | | — | | — | Financial investments | | 20,174 | | — | | 9,074 | | 11,100 | Non-hedging derivative financial assets | | 16,372 | | — | | — | | 16,372 | Other financial instruments (Note 21): | | | | | | | | | Hedging derivative financial liabilities | | (8,953) | | — | | — | | (8,953) | Non-hedging derivative financial liabilities | | (39,239) | | — | | — | | (39,239) | Other liabilities (Note 23): | | | | | | | | | Contingent consideration in a business combination | | (3,136) | | — | | — | | (3,136) |
| | | | | | | | | | | December 31, 2024 | | | | | Quoted prices in active markets | | Significant observable inputs | | Significant unobservable inputs | | | Total | | (Level 1) | | (Level 2) | | (Level 3) | | | US$'000 | | US$'000 | | US$'000 | | US$'000 | Property, plant and equipment (Note 8): | | | | | | | | | Property, plant and equipment | | 21,058 | | — | | 21,058 | | — | Other financial assets (Note 9): | | | | | | | | | Equity securities | | 1,815 | | 1,815 | | — | | — | Financial investments | | 5,500 | | — | | — | | 5,500 | Other financial instruments (Note 21): | | | | | | | | | Derivative financial assets - PPA | | 23,649 | | — | | 23,649 | | — | Derivative financial liabilities - PPA | | (1,045) | | — | | (1,045) | | — | Other liabilities (Note 23): | | | | | | | | | Contingent consideration in a business combination | | (3,338) | | — | | — | | (3,338) |
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| Schedule of changes fair value on recurring basis using significant unobservable inputs Level 3 |
| | | | | | | | | Derivatives | | Contingent consideration | | Total | Fair value at December 31, 2022 | | — | | (5,838) | | (5,838) | Changes in fair value through profit or loss | | 26,684 | | (717) | | 25,967 | Payments | | — | | 4,823 | | 4,823 | Fair value at December 31, 2023 | | 26,684 | | (1,732) | | 24,952 | Changes in fair value through profit or loss | | (3,035) | | (5,467) | | (8,502) | Payments | | — | | 3,861 | | 3,861 | Fair value at December 31, 2024 | | 23,649 | | (3,338) | | 20,311 | Changes in fair value through profit or loss | | (46,516) | | (2,331) | | (48,847) | Payments | | — | | 2,533 | | 2,533 | Fair value at December 31, 2025 | | (22,867) | | (3,136) | | (26,003) |
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