15.

INVENTORIES


	December 31, 2017		December 31, 2018
	NT$		NT$
	(In Millions)		(In Millions)
Finished goods	$	9,923.3	$	11,329.8
Work in process		53,362.2		72,071.9
Raw materials		7,143.8		15,233.9
Supplies and spare parts		3,451.4		4,595.4


	$	73,880.7	$	103,231.0

Write-down of inventories to net realizable value in the amount NT$1,542.8 million (excluding earthquake losses) and NT$1,259.5 million (excluding computer virus outbreak losses), respectively, were included in the cost of revenue for the years ended December 31, 2016 and 2018. Reversal of write-down of inventories resulting from the increase in net realizable value in the amount of NT$840.9 million was included in the cost of revenue for the year ended December 31, 2017. Please refer to earthquake losses and computer virus outbreak losses in Note 41.