CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS	6 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 63,897,532	$ 50,724,210
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	4,123,599	3,289,535
Amortization	415,231	371,168
Loss on sale of property, plant and equipment and land use rights	313,529	71,494
Allowance for doubtful accounts - accounts receivable	35,372	$ 1,477
Allowance for doubtful accounts - other receivables and prepayments	796
Write-down of obsolete inventories	16,750	$ 9,092
Deferred tax expense	167,921	1,154,991
Share-based compensation	4,033,482	1,961,929
Equity in loss (income) of an equity method investee	761,300	(1,860,579)
Excess tax benefits from share-based compensation arrangements	(288,681)	(760,869)
Change in operating assets and liabilities:
Accounts receivable	(18,835,493)	(7,473,499)
Prepayment and other current assets	(1,165,997)	(2,393,459)
Inventories	(25,272,719)	(6,852,680)
Accounts payable	10,123,561	(438,427)
Other payables and accrued expenses	(2,391,597)	171,318
Deferred income	(149,708)	(74,721)
Income tax payable	(1,223,601)	1,126,281
Net cash provided by operating activities	34,561,277	39,027,261
CASH FLOWS FROM INVESTING ACTIVITIES:
Payment for property, plant and equipment	(16,486,212)	(10,243,198)
Payment for intangible assets and land use right	$ (4,205,678)	(1,227,914)
Refund of deposits related to land use right		1,635,200
Proceeds upon maturity of time deposit		6,608,612
Proceeds from sale of property, plant and equipment and land use rights	$ 559,029	190,660
Net cash used in investing activities	(20,132,861)	(3,036,640)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from stock option exercised	771,164	1,643,559
Repayment of bank loans	$ (97,910,360)	(4,905,600)
Proceeds from long-term bank loans		$ 70,000,000
Maturity of deposit as security for short-term bank loan	$ 31,985,122
Payment for deposit as security for long-term bank loans		$ (72,290,922)
Payment for share repurchase		(70,000,000)
Excess tax benefits from share-based compensation arrangements	$ 288,681	760,869
Dividend paid by subsidiaries to noncontrolling interest shareholders		$ (1,409,542)
Net proceeds from reissuance of treasury stock	$ 80,583,959
Dividend to the trial court to be held in escrow as to dispute with Jie'an	(3,690,814)
Net cash provided by (used in) financing activities	12,027,752	$ (76,201,636)
EFFECTS OF FOREIGN EXCHANGE RATE CHANGE ON CASH	(661,684)	(703,847)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	25,794,484	(40,914,862)
Cash and cash equivalents at beginning of period	80,820,224	144,138,487
Cash and cash equivalents at end of period	106,614,708	103,223,625
Supplemental cash flow information
Cash paid for income taxes	12,829,660	7,564,408
Cash paid for interest expense	1,428,614	1,067,251
Noncash investing and financing activities:
Acquisition of property, plant and equipment included in payables	$ 231,397	$ 2,805,220