Consolidated Satatements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME	$ 4,198,580	$ 5,760,543
Adjustments to reconcile net income from operations to net cash provided by operating activities:
Depreciation	6,519,394	5,351,359
Amortization of land use rights	93,537	91,316
Decrease in inventory reserve	(37,882)
(Decrease) increase in allowance for doubtful accounts	(46,672)	720,302
Loss on impairment of equipment held for sale	2,206,253
Warrant modification expense	235,133
Stock-based compensation expense	167,714	355,856
Changes in operating assets and liabilities:
Notes receivable	(34,178)	(848)
Accounts receivable	(2,887,716)	694,014
Inventories	(1,549,740)	(761,072)
Prepaid value-added taxes on purchases	981,236	1,331,923
Prepaid and other current assets	(43,513)	(64,667)
Advances to suppliers	(371,849)	125,396
Accounts payable	438,945	(3,425,206)
Accrued expenses	209,831	224,493
VAT and service taxes payable	206,405	(83,358)
Income taxes payable	(326,373)	(777,914)
Advances from customers	675,667	906,282
NET CASH PROVIDED BY OPERATING ACTIVITIES	10,634,772	10,448,419
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(10,744,247)	(11,115,640)
NET CASH USED IN INVESTING ACTIVITIES	(10,744,247)	(11,115,640)
CASH FLOWS FROM FINANCING ACTIVITIES:
Principal payments on capital lease	(246,485)	(156,918)
Proceeds from bank loans	3,481,101	4,325,320
Repayments of bank loans	(3,639,333)	(3,861,893)
Decrease (increase) in restricted cash	316,464	(308,951)
(Decrease) increase in bank acceptance notes payable	(316,464)	308,951
Proceeds from sale of common stock		125,000
Proceeds from sale of common stock - related parties	612,903
Proceeds from exercise of warrants	198,142	400,000
NET CASH PROVIDED BY FINANCING ACTIVITIES	406,328	831,509
EFFECT OF EXCHANGE RATE ON CASH AND CASH EQUIVALENTS	(3,732)	41,142
NET INCREASE IN CASH AND CASH EQUIVALENTS	293,121	205,430
CASH AND CASH EQUIVALENTS - beginning of year	1,152,607	947,177
CASH AND CASH EQUIVALENTS - end of year	1,445,728	1,152,607
Cash paid for:
Interest	305,659	193,709
Income taxes	2,027,976	3,118,384
NON-CASH INVESTING AND FINANCING ACTIVITIES:
Security deposit and leased property in exchange for capital lease obligations		772,379
Increase in property in exchange for increase in payable		516,531
Series A preferred converted to common shares	13,198	5,916
Common stock issued for future service	$ 281,265	$ 7,833