CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 4,156,861	$ 2,059,409
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	863,343	706,064
Deferred income tax assets	(56,550)	60,515
Changes in operating assets and liabilities
Accounts receivable	18,455,170	14,225,403
Other receivable	(263,398)	2,009
Advances to suppliers and other current assets	(69,496)	(109,276)
Inventories	107,472	1,163,961
Accounts payable	(7,298,251)	(875,022)
Accrued expenses	(513,157)	(1,233,484)
Income tax payable	(1,785,680)	(1,055,393)
Advances from customers	(403,363)	(178,673)
Net cash provided by operating activities	13,192,951	14,765,513
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to property, plant and equipment	(428,692)	(1,320,608)
Prepayment for other assets	(9,600)	(13,621)
Net cash used in investing activities	(438,292)	(1,334,229)
CASH FLOWS FROM FINANCING ACTIVITIES
Increased in restricted cash		284,361
Short-term notes payable		(284,361)
Proceeds from related party loan	4,000,000
Proceeds from short-term bank loans		3,170,879
Repayment of short-term bank loans	(3,185,474)	(1,139,578)
Net cash provided by financing activities	814,526	2,031,301
Effect of change in exchange rate	191,340	96,897
NET INCREASE IN CASH AND CASH EQUIVALENTS	13,760,525	15,559,482
Cash and cash equivalents, beginning of period	77,560,278	61,154,007
Cash and cash equivalents, end of period	91,320,803	76,713,489
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid for interest	250,722	154,812
Cash paid for income taxes	3,326,095	1,923,258
SUPPLEMENTARY DISCLOSURE OF SIGNIFICANT NON-CASH TRANSACTION
Transferred from other assets to property, plant and equipment and construction in process	$ 315,394	$ 5,158,425