CONDENSED CONSOLIDATEDBALANCE SHEETS (USD $)	Jun. 30, 2013	Dec. 31, 2012
CURRENT ASSETS
Cash and cash equivalents	$ 180,841,776	$ 144,300,290
Accounts receivable, net	43,921,519	45,284,923
Prepayments for raw material purchases	20,168,209	19,569,239
Inventories	19,413,991	17,844,405
Other receivables, deposits and prepayments	678,442	559,955
Prepaid land use right - current portion	412,961	406,026
Deferred income tax assets	54,767	24,948
Total current assets	265,491,665	227,989,786
OTHER ASSETS
Property, plant and equipment, net	46,141,013	47,197,115
Construction in progress	623,108	175,006
Deposit for plant and equipment	332,109	0
Prepaid land use right - long-term portion	18,660,843	18,546,658
Intangible assets	2,421	3,332
Total non-current assets	65,759,494	65,922,111
Total assets	331,251,159	293,911,897
CURRENT LIABILITIES
Accounts payable	6,031,889	3,891,110
Other payables and accruals	6,014,414	4,937,404
Income taxes payable	5,617,636	5,797,188
Warrant liabilities	325,000	354,000
Total current liabilities	17,988,939	14,979,702
Total liabilities	17,988,939	14,979,702
STOCKHOLDERS' EQUITY
Preferred stock: $0.0001 par value, 10,000,000 shares authorized, none issued and outstanding	0	0
Common stock, $0.0001 par value: 75,000,000 shares authorized, 30,095,383 shares issued and 29,831,336 shares outstanding as of June 30, 2013 (December 31, 2012: 30,084,883 shares issued and 29,820,836 shares outstanding)	3,009	3,008
Additional paid-in capital	79,474,320	79,257,921
Treasury stock, at cost, 264,047 shares as of June 30, 2013 and December 31,2012	(2,126,597)	(2,126,597)
Statutory reserves	16,684,390	14,566,846
Retained earnings	197,032,573	170,163,120
Accumulated other comprehensive income	22,194,525	17,067,897
Total stockholders' equity	313,262,220	278,932,195
Total liabilities and stockholders' equity	$ 331,251,159	$ 293,911,897