3. NET INVESTMENT IN SALES-TYPE LEASES

Under sales-type leases, Xi’an TCH leased TRT systems to Zhangzhi with terms of five and 13 years, respectively; and leased CHPG systems to Tong Chuan, Shengwei, and Jin Yang Shengwei respectively for five years, BMPG systems to Pucheng for 15 years, BMPG systems to Shenqiu for 11 years, and a power and steam generating system from waste heat from metal refining to Erdos (five projects) for 20 years. The components of the net investment in sales-type leases as of June 30, 2012 and December 31, 2011 are as follows:

	2012			2011
Total future minimum lease payments receivable	$	394,702,553		$	415,796,738
Less: executory cost		(116,868,961	)		(121,384,498	)
Less: unearned interest income		(146,314,949	)		(158,110,200	)
Net investment in sales - type leases		131,518,643			136,302,040
Current portion		9,060,139			8,725,345
Noncurrent portion	$	122,458,504		$	127,576,695

As of June 30, 2012, the future minimum rentals to be received on non-cancelable sales-type leases by years are as follows:

2013	$	35,558,920
2014		32,733,408
2015		26,252,595
2016		26,220,974
2017		26,220,974
Thereafter		247,715,682
Total	$	394,702,553