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Inventories
 12 Months Ended
Dec. 31, 2018
Classes Of Inventories [Abstract]  
Inventories

12.

INVENTORIES

 

 

 

December 31

 

 

 

2017

 

 

2018

 

 

 

NT$

 

 

NT$

 

 

 

(In Millions)

 

Merchandise

 

$

5,133

 

 

$

6,068

 

Project in process

 

 

1,390

 

 

 

6,756

 

Work in process

 

 

152

 

 

 

109

 

Raw materials

 

 

89

 

 

 

112

 

 

 

 

6,764

 

 

 

13,045

 

Land held under development

 

 

1,999

 

 

 

1,999

 

Construction in progress

 

 

77

 

 

 

77

 

 

 

$

8,840

 

 

$

15,121

 

 

The operating costs related to inventories were $54,183 million, $56,342 million and $48,649 million for the years ended December 31, 2016, 2017 and 2018, respectively.

For the years ended December 31, 2016, 2017 and 2018, the provisions for inventory and obsolescence recognized as operating costs included the amounts of $192 million, $52 million and $365 million, respectively.

As of December 31, 2017 and 2018, inventories of $2,076 million and $2,076 million, respectively, were expected to be recovered for a time period longer than twelve months.  The aforementioned amount of inventories is related to property development owned by LED.

Land held under development and construction in progress on December 31, 2017 and 2018 was developed by LED for Qingshan Sec., Dayuan Dist., Taoyuan City project.