11. DEFERRED TAX LIABILITY, NET

Deferred tax assets resulted from asset impairment loss which was temporarily non-tax deductible for tax purposes but expensed in accordance with US GAAP, interest income in sales-type leases which was recognized as income for tax purposes but not for book purpose as it did not meet revenue recognition in accordance with US GAAP, accrued employee social insurance that can be deducted for tax purposes in the future, and the difference between tax and accounting basis of cost of fixed assets which was capitalized for tax purposes and expensed as part of cost of systems in accordance with US GAAP. Deferred tax liability arose from the difference between tax and accounting basis of net investment in sales-type leases.

As of September 30, 2018 and December 31, 2017, deferred tax liability consisted of the following:

	2018 (Restated)			2017 (Restated)
Deferred tax asset — current (accrual of employee social insurance)	$	180,107		$	189,617
Deferred tax liability — current (net investment in sales-type leases)		(1,585,246	)		(1,520,537	)
Deferred tax liability, net of current deferred tax asset	$	(1,405,139	)	$	(1,330,920	)

Deferred tax asset — noncurrent (depreciation of fixed assets)	$	8,969,184		$	10,250,394
Deferred tax asset — noncurrent (asset impairment loss)		1,209,848			450,706
Deferred tax asset---noncurrent (interest income in sales-type leases)		442,949			-
Deferred tax asset---noncurrent (US NOL)		14,688,731			14,321,617
Deferred tax asset---noncurrent (PRC NOL)		8,870,766			-
Less: valuation allowance on deferred tax assets		(23,559,497	)		(14,321,617	)
Deferred tax assets --- noncurrent, net		10,621,981			10,701,100
Deferred tax liability — noncurrent (net investment in sales-type leases)		(9,742,276	)		(11,527,594	)
Deferred tax asset (liability), net of noncurrent deferred tax assets	$	879,705		$	(826,494	)

Total Deferred tax liability, noncurrent per ASU 2015-17	$	(525,434	)	$	(2,157,414	)