15.

INVESTMENT PROPERTIES

	Land		Buildings and improvements			Total
	NT$		NT$			NT$

Cost

Balance at January 1, 2017	$	-	$	-		$	-
Additions		-		186,535			186,535
Disposals		-		(342	)		(342	)
Transfers from inventories related to real estate business and property, plant and equipment		35,965		8,114,110			8,150,075
Effects of foreign currency exchange differences		-		106,482			106,482

Balance at December 31, 2017	$	35,965	$	8,406,785		$	8,442,750

Accumulated depreciation and impairment

Balance at January 1, 2017	$	-	$	-		$	-
Depreciation expenses		-		122,231			122,231
Disposals		-		(161	)		(161	)
Transfers from property, plant and equipment		-		199,745			199,745
Effects of foreign currency exchange differences		-		1,499			1,499

Balance at December 31, 2017	$	-	$	323,314		$	323,314

	Land		Buildings and improvements			Total
	US$ (Note 4)		US$ (Note 4)			US$ (Note 4)

Cost

Balance at January 1, 2017	$	-	$	-		$	-
Additions		-		6,293			6,293
Disposals		-		(11	)		(11	)
Transfers from inventories related to real estate business and property, plant and equipment		1,213		273,755			274,968
Effects of foreign currency exchange differences		-		3,593			3,593

Balance at December 31, 2017	$	1,213	$	283,630		$	284,843

Accumulated depreciation and impairment

Balance at January 1, 2017	$	-	$	-		$	-
Depreciation expenses		-		4,124			4,124
Disposals		-		(5	)		(5	)
Transfers from property, plant and equipment		-		6,739			6,739
Effects of foreign currency exchange differences		-		50			50

Balance at December 31, 2017	$	-	$	10,908		$	10,908

The investment properties are depreciated using the straight-line method over their estimated useful lives as follows:

Main buildings		10-40 years
Others		3-20 years

The fair value of the investment properties was approximately NT$11,560,440 thousand (US$390,028 thousand) which was measured using the market approach and the income approach based on level 3 inputs by independent professional appraisers.

Investment properties are held under freehold interests. Refer to Note 36 for the carrying amount of the investment properties that had been pledged by the Group to secure borrowings.