3. NET INVESTMENT IN SALES-TYPE LEASES

Under sales-type leases, Xi’an TCH leased TRT systems to Zhangzhi with terms of 13 years; and leased CHPG systems to Tong Chuan, Shengwei, and Jing Yang Shengwei respectively for 5 years, BMPG systems to Pucheng Phase I and II for 15 and 10 years respectively, BMPG systems to Shenqiu Phase I for 11 years, Shenqiu Phase II for 9.5 years, a power and steam generating system from waste heat from metal refining to Erdos (five projects) for 20 years, WHPG system of Zhongbao for nine (9) years, and Datong two BPRT systems for 30 years. The components of the net investment in sales-type leases as of September 30, 2013 and December 31, 2012 are as follows:

	2013		2012
Total future minimum lease payments receivable	$	487,405,870	$	380,608,263
Less: executory cost		(124,038,565)		(113,529,216)
Less: unearned interest income		(190,280,460)		(138,668,584)
Net investment in sales - type leases		173,086,845		128,410,463
Current portion		10,425,585		10,389,028
Noncurrent portion	$	162,661,260	$	118,021,435

As of September 30, 2013, the future minimum rentals to be received on non-cancelable sales-type leases by years are as follows:

2014	$	41,577,205
2015		35,821,007
2016		35,821,007
2017		35,821,007
2018		35,774,982
Thereafter		302,590,662
Total	$	487,405,870