
	31.12.2020		31.12.2021		31.12.2021
	RMB’000		RMB’000		US$’000
Raw materials		1,940,119		2,111,881		334,042
Work in progress		33,211		25,169		3,981
Finished goods		2,497,865		3,071,586		485,841

Total inventories at the lower of cost and net realizable value		4,471,195		5,208,636		823,864


	31.12.2019			31.12.2020			31.12.2021			31.12.2021
	RMB’000			RMB’000			RMB’000			US$’000
Inventories recognized as an expense in cost of sales		13,167,181			15,501,807			16,457,476			2,603,125
Inclusive of the following charge/(credit):
- Inventories written down		31,810			82,386			32,813			5,190
- Reversal of write-down of inventories		(14,788	)		(54,408	)		(41,823	)		(6,615	)
- Inventories written off		—			—			10,085			1,595

The reversal of write-down of inventory was made when the related inventories were sold above their carrying value.