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Inventories (Tables)

12 Months Ended

Dec. 31, 2017

Classes Of Inventories [Abstract]

Summary of Inventories

		As of December 31,
		2017				2016
		US$’000				US$’000
Raw materials and supplies			32,278				24,382
Work in progress			14,240				12,057
Finished goods			39,460				31,489
Distributed products			13,591				11,130
			99,569				79,058
Allowance for inventories			(2,364	)			(1,651	)
Total inventories at the lower of cost and net realizable value			97,205				77,407