Consolidated statements of cash flows - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2017	Sep. 30, 2016
Cash flows from operating activities
Net loss	$ (2,194,397)	$ (21,467,341)	$ (12,652,194)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	233,913	1,592,322	1,117,741
Provision for doubtful accounts	44,861	725,375	2,779,497
Write-down of inventories	414,919	5,776,891	439,068
Impairment charge	0	972,387	0
Share-based compensation	345,079	759,292	1,462,197
Deferred tax liabilities (assets)	0	0	(96,793)
Exchange loss	121,768	80,547	213,127
Changes in operating assets and liabilities:
Trade accounts and bills receivable	(227,521)	(53,553,988)	(569,265)
Inventories	(1,640,307)	2,323,308	(14,357,199)
Prepayments and other receivables	(212,989)	147,362	(4,389,940)
Trade accounts and bills payable	(2,277,799)	47,151,533	5,515,277
Accrued expenses and other payables and product warranty provisions	407,055	2,751,700	1,232,105
Income tax (receivable) payable	439,080	0	310,108
Trade receivable from and payables to former subsidiaries	(1,778,157)	18,957,526	5,108,935
Net cash (used in) provided by operating activities	(6,324,495)	6,216,914	(13,887,336)
Cash flows from investing activities
(Increase) decrease in pledged deposits	112,893	(4,367,646)	(3,187,541)
Proceeds on disposal of property, plant and equipment	7,904	0	0
Purchases of property, plant and equipment and construction in progress	(1,669,885)	(12,047,863)	(5,926,675)
Net cash used in investing activities	(1,549,088)	(16,415,509)	(9,114,216)
Cash flows from financing activities
Proceeds from bank borrowings	0	0	19,410,639
Repayment of bank borrowings	0	(1,479,487)	(10,715,653)
Borrowings from unrelated parties	1,108,459	6,055,838	87,230
Repayment of borrowings from unrelated parties	0	(6,402,906)	(76,540)
Borrowings from related party	5,297,399	18,964,063	4,289,084
Repayment to related party	0	(17,407,191)	0
Advances from investors	0	2,071,282	0
Advances from former subsidiaries	0	2,367,179	0
Repayment to former subsidiaries	0	(2,367,179)	0
Proceeds from issuance of common stock	0	9,605,277	5,516,600
Net cash provided by financing activities	6,405,858	11,406,876	18,511,360
Effect of exchange rate changes on cash and cash equivalents	(76,857)	27,541	(319,258)
Net (decrease) increase in cash and cash equivalents	(1,544,582)	1,235,822	(4,809,450)
Cash and cash equivalents at the beginning of period	1,953,295	408,713	6,762,745
Cash and cash equivalents at the end of period	408,713	1,644,535	1,953,295
Non-cash transactions:
Transfer of construction in progress to property, plant and equipment	298,203	15,637,965	602,109
Cash paid during the period for:
Income taxes	0	0	459,265
Interest, net of amounts capitalized	$ 0	$ 95,903	$ 0