Consolidated Balance Sheets (USD $)	Mar. 31, 2013	Dec. 31, 2012
CURRENT ASSETS:
Cash and cash equivalents	$ 1,151,418	$ 1,445,728
Restricted cash	955,171
Notes receivable	221,843	88,029
Accounts receivable, net of allowance for doubtful accounts	9,470,017	10,078,623
Inventories, net of reserve for obsolete inventory	6,653,981	5,897,555
Advances to suppliers	1,341,777	593,104
Prepaid VAT on purchases	646,322	542,032
Prepaid expenses and other	417,300	428,326
Total Current Assets	20,857,829	19,073,397
PROPERTY AND EQUIPMENT - net	60,923,316	59,436,100
OTHER ASSETS:
Deferred tax asset	554,921	551,890
Equipment held for sale	7,157,652	7,118,555
Land use rights, net	3,753,446	3,756,342
Total Assets	93,247,164	89,936,284
CURRENT LIABILITIES:
Short-term bank loans	3,024,707	2,216,558
Bank acceptance notes payable	955,171
Accounts payable	5,300,010	5,474,479
Accrued expenses	478,956	986,824
Capital lease obligation - current portion	255,125	251,413
Advances from customers	2,412,457	1,851,987
VAT and service taxes payable	96,560	206,527
Income taxes payable	633,748	822,082
Total Current Liabilities	13,156,734	11,809,870
OTHER LIABILITIES:
Capital lease obligation - net of current portion	45,732	132,756
Total Liabilities	13,202,466	11,942,626
STOCKHOLDERS' EQUITY:
Preferred stock ($0.001 par value; 10,000,000 shares authorized; 0 share issued and outstanding at March 31, 2013 and December 31, 2012)
Common stock ($0.001 par value; 50,000,000 shares authorized; 2,894,586 shares issued and outstanding at March 31, 2013 and December 31, 2012)	2,894	2,894
Additional paid-in capital	28,987,128	28,987,128
Retained earnings	39,950,365	38,401,734
Statutory reserve	2,553,707	2,479,738
Accumulated other comprehensive gain - foreign currency translation adjustment	8,550,604	8,122,164
Total Stockholders' Equity	80,044,698	77,993,658
Total Liabilities and Stockholders' Equity	$ 93,247,164	$ 89,936,284