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INCOME AND EXPENSES ITEMS
 12 Months Ended
Dec. 31, 2024
Analysis of income and expense [abstract]  
INCOME AND EXPENSES ITEMS INCOME AND EXPENSES ITEMS
7(a)    Other operating income
202420232022
US$’000US$’000US$’000
Gain on disposal of investment property— — 271 
Gain on disposal of assets classified as held for sale— — 240 
Gain on disposal of property, plant, and equipment824 39 132 
Rental income264 323 254 
Other operating income – others277 71 129 
Total other operating income1,365 433 1,026 
7(b)    Other operating expenses
202420232022
US$’000US$’000US$’000
Other operating expenses – others12 — 3 
Total other operating expenses12 — 3 
7.    INCOME AND EXPENSES ITEMS (continued)
7(c)    Net impairment loss on financial and contract assets
202420232022
US$’000US$’000US$’000
Impairment for trade receivables (Note 12(a))582 75 509 
Impairment for trade receivables for related parties (Note 25(b))— 4,565 — 
Reversal of impairment for trade receivables for related parties— — (1)
Impairment of other receivable3 — — 
Total net impairment loss on financial and contract assets585 4,640 508 
7(d)    Finance costs
202420232022
US$’000US$’000US$’000
Interest on loans and borrowings2,083 2,301 1,408 
Interest on leases liabilities85 98 80 
Total interest expenses2,168 2,399 1,488 
Bank charges136 128 162 
Total finance costs2,304 2,527 1,650 
7(e)    Finance income
202420232022
US$’000US$’000US$’000
Interest income208 205 120 
Total finance income208 205 120 
7(f)    Other income and expenses
202420232022
US$’000US$’000US$’000
Government grants187 74 639 
Net (loss)/gain on financial instruments(234)196 33 
Dividend income96 97 97 
Other income595 203 120 
Other expenses— (9)(3)
Total other income and expenses644 561 886 
7.    INCOME AND EXPENSES ITEMS (continued)
7(g)    Depreciation, amortization and lease expense included in the consolidated income statements
202420232022
US$’000US$’000US$’000
Included in cost of sales:
Depreciation – property, plant and equipment3,874 4,077 4,278 
Depreciation – right of use assets125 133 133 
Amortization – intangible assets25 26 24 
Lease expenses26 1 1 
Included in selling expenses: 
Depreciation – property, plant and equipment138 133 116 
Depreciation – right of use assets163 197 167 
Lease expenses1 1 1 
Included in general and administrative expenses: 
Depreciation – property, plant and equipment698 580 538 
Depreciation – right of use assets466 456 382 
Amortization – intangible assets40 28 21 
Depreciation – investment properties25 168 176 
Lease expenses15 14 12 
Included in research and development expenses:
Depreciation – property, plant and equipment521 409 — 
Depreciation – right of use assets11 4 — 
6,128 6,227 5,849 
7.    INCOME AND EXPENSES ITEMS (continued)
7(h)    Employee benefits expenses
202420232022
US$’000US$’000US$’000
Included in cost of sales:
Wages and salaries11,802 12,207 12,555 
Labor and health insurance costs80 79 79 
Pension costs736 833 886 
Other employee benefits740 750 734 
Included in selling expenses:
Wages and salaries4,494 4,221 3,881 
Labor and health insurance costs20 10 9 
Pension costs383 359 337 
Other employee benefits44 33 25 
Included in general and administrative expenses:
Wages and salaries8,389 8,116 7,950 
Labor and health insurance costs150 144 103 
Pension costs803 669 608 
Director fees455 323 412 
Other employee benefits182 161 138 
Included in research and development expenses:
Wages and salaries746 676 — 
Labor and health insurance costs33 16 — 
Pension costs64 42 — 
Other employee benefits24 15 — 
Total employee benefits expenses29,145 28,654 27,717