Consolidated balance sheets - USD ($)	Dec. 31, 2017	Dec. 31, 2016	Sep. 30, 2016
Current assets
Cash and cash equivalents	$ 1,644,535	$ 408,713	$ 1,953,295
Pledged deposits	9,104,178	4,278,144	4,569,027
Trade accounts and bills receivable, net	57,518,612	2,468,387	2,382,427
Inventories	9,832,405	17,094,922	16,540,252
Prepayments and other receivables	6,971,810	6,675,351	6,730,671
Prepaid land use rights, current portion	172,700	161,790	168,418
Total current assets	85,244,240	31,087,307	32,344,090
Property, plant and equipment, net	34,965,510	20,010,903	20,735,209
Construction in progress	25,029,290	33,457,043	32,321,914
Prepaid land use rights, non-current	7,872,235	7,536,733	7,887,587
Intangible assets, net	20,049	21,344	22,885
Total assets	153,131,324	92,113,330	93,311,685
Current liabilities
Trade accounts and bills payable	65,616,543	15,580,655	18,551,836
Short-term bank loans	0	1,439,947	1,498,936
Other short-term loans	14,636,450	10,524,778	4,391,004
Accrued expenses and other payables	14,208,947	19,382,593	18,561,640
Payables to former subsidiaries, net	22,302,721	2,488,859	4,382,234
Deferred government grants, current	152,003	142,400	197,645
Total current liabilities	116,916,664	49,559,232	47,583,295
Long-term bank loans	19,489,702	18,258,528	19,006,505
Deferred government grants, non-current	4,712,128	4,556,861	4,731,185
Product warranty provision	2,279,831	0	0
Long term tax payable	7,537,273	7,061,140	6,900,704
Total liabilities	150,935,598	79,435,761	78,221,689
Commitments and contingencies	0	0	0
Shareholders' equity
Common stock $0.001 par value; 500,000,000 authorized; 19,689,674 issued and 19,545,468 outstanding as of September 30, 2016; 19,744,675 issued and 19,600,469 outstanding as of December 31, 2016; and 26,367,523 issued and 26,223,317 outstanding as of December 31, 2017	26,368	19,745	19,690
Donated shares	14,101,689	14,101,689	14,101,689
Additional paid-in capital	155,711,014	145,353,067	145,008,043
Statutory reserves	1,230,511	1,230,511	1,230,511
Accumulated deficit	(163,466,713)	(141,999,372)	(139,804,975)
Accumulated other comprehensive loss	(1,340,533)	(1,961,461)	(1,398,352)
Stockholders' Equity before Treasury Stock	6,262,336	16,744,179	19,156,606
Less: Treasury shares	(4,066,610)	(4,066,610)	(4,066,610)
Total shareholders' equity	2,195,726	12,677,569	15,089,996
Total liabilities and shareholder's equity	$ 153,131,324	$ 92,113,330	$ 93,311,685