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Inventories (Tables)

12 Months Ended

Dec. 31, 2018

Classes Of Inventories [Abstract]

Summary of Inventories

		As of December 31,
		2018				2017
		US$’000				US$’000
Raw materials and supplies			25,717				32,278
Work in progress			15,598				14,240
Finished goods			46,592				53,051
			87,907				99,569
Allowance for inventories			(3,982	)			(2,364	)
Total inventories at the lower of cost and net realizable value			83,925				97,205