Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
CURRENT ASSETS:
Cash and cash equivalents	$ 1,114,873	$ 1,445,728
Restricted cash	687,353
Notes receivable	703,718	88,029
Accounts receivable, net of allowance for doubtful accounts	15,234,863	10,078,623
Inventories, net of reserve for obsolete inventory	4,733,558	5,897,555
Advances to suppliers	695,254	593,104
Prepaid VAT on purchases	489,302	542,032
Deferred tax assets - current portion	253,173
Prepaid expenses and other	74,030	428,326
Total Current Assets	23,986,124	19,073,397
PROPERTY AND EQUIPMENT - net	70,595,138	59,436,100
OTHER ASSETS:
Deferred tax assets - net of current portion	1,222,216	551,890
Equipment held for operating lease	4,751,206	7,118,555
Land use rights, net	3,786,051	3,756,342
Total Assets	104,340,735	89,936,284
CURRENT LIABILITIES:
Short-term bank loans	3,109,453	2,216,558
Bank acceptance notes payable	687,353
Accounts payable	4,961,555	5,474,479
Accrued expenses	899,816	986,824
Capital lease obligation - current portion		251,413
Advances from customers	1,455,740	1,851,987
VAT and service taxes payable	126,349	206,527
Income taxes payable	1,623,603	822,082
Total Current Liabilities	12,863,869	11,809,870
OTHER LIABILITIES:
Capital lease obligation - net of current portion		132,756
Total Liabilities	12,863,869	11,942,626
STOCKHOLDERS' EQUITY:
Preferred stock ($0.001 par value; 10,000,000 shares authorized; 0 share issued and outstanding at December 31, 2013 and 2012, respectively)
Common stock ($0.001 par value; 50,000,000 shares authorized; 3,503,502 and 2,894,586 shares issued and outstanding at December 31, 2013 and 2012, respectively)	3,503	2,894
Additional paid-in capital	31,532,308	28,987,128
Retained earnings	46,322,329	38,401,734
Statutory reserve	2,744,720	2,479,738
Accumulated other comprehensive gain - foreign currency translation adjustment	10,874,006	8,122,164
Total Stockholders' Equity	91,476,866	77,993,658
Total Liabilities and Stockholders' Equity	$ 104,340,735	$ 89,936,284