Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Dec. 31, 2013
CURRENT ASSETS:
Cash and cash equivalents	$ 2,001,106	$ 1,114,873
Restricted cash	405,719	687,353
Notes receivable	76,275	703,718
Accounts receivable, net of allowance for doubtful accounts	13,679,677	15,234,863
Inventories, net of reserve for obsolete inventories	6,106,615	4,733,558
Advances to suppliers	611,547	695,254
Prepaid VAT on purchases	118,415	489,302
Deferred tax assets - current portion	251,057	253,173
Prepaid expenses and other	86,958	74,030
Total Current Assets	23,337,369	23,986,124
PROPERTY AND EQUIPMENT - net	71,166,982	70,595,138
OTHER ASSETS:
Deferred tax assets - net of current portion	1,212,001	1,222,216
Equipment held for operating lease	4,711,496	4,751,206
Land use rights, net	3,730,424	3,786,051
Total Assets	104,158,272	104,340,735
CURRENT LIABILITIES:
Short-term bank loans	3,083,465	3,109,453
Bank acceptance notes payable	405,719	687,353
Accounts payable	4,591,665	4,961,555
Accrued expenses	469,834	899,816
Advances from customers	1,124,627	1,455,740
VAT and service taxes payable	73,457	126,349
Income taxes payable	1,318,069	1,623,603
Total Current Liabilities	11,066,836	12,863,869
Total Liabilities	11,066,836	12,863,869
STOCKHOLDERS' EQUITY:
Preferred stock ($0.001 par value; 10,000,000 shares authorized; 0 share issued and outstanding at March 31, 2014 and December 31, 2013, respectively)
Common stock ($0.001 par value; 50,000,000 shares authorized; 3,503,502 and 3,503,502 shares issued and outstanding at March 31,2014 and December 31, 2013, respectively	3,503	3,503
Additional paid-in capital	31,532,308	31,532,308
Retained earnings	48,601,672	46,322,329
Statutory reserve	2,861,735	2,744,720
Accumulated other comprehensive gain - foreign currency translation adjustment	10,092,218	10,874,006
Total Stockholders' Equity	93,091,436	91,476,866
Total Liabilities and Stockholders' Equity	$ 104,158,272	$ 104,340,735