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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Cash flows from operating activities    
Net income $ 130,615 $ 209,744
Adjustments to reconcile net income to net cash used in operating activities    
Stock-based compensation expense 60,068 59,300
Depreciation and amortization 118,724 109,373
Change in fair value of warrants liability 199,508 (9,526)
Increase in accounts receivable (739,737) (752,897)
Decrease (Increase) in prepayments and other current assets 81,913 (2,884,433)
Decrease (Increase) in other receivables (1,701,006) 167,707
Decrease in inventories 1,374,764 484,029
Decrease (Increase) in tax receivable 517,169 (69,169)
Increase (Decrease) Increase in accounts payable (4,539) 116,617
Decrease (Increase) in advances from customers (108,803) 25,248
Increase in accrued expenses and other current liabilities (26,122) (17,345)
(Decrease) Increase in tax payable (1,493,151) 447,618
Net cash used in operating activities (1,590,597) (2,113,734)
Cash flows from investing activities    
Capital expenditures and other additions (5,758) (8,274)
Advances to related parties 0 (2,358)
Net cash used in investing activities (5,758) (10,632)
Cash flows from financing activities    
Proceeds from bank loan 791,315 0
Repayment of bank loan (631,428) (610,816)
Net cash provided by (used in) financing activities 159,887 (610,816)
Effect of exchange rate fluctuations on cash and cash equivalents 41,252 184,469
Net decrease in cash and cash equivalents (1,395,216) (2,550,713)
Cash and cash equivalents at beginning of period 3,694,486 5,923,386
Cash and cash equivalents at end of period 2,299,270 3,372,673
Supplemental cash flow information    
Income tax paid 775,123 4,583
Interest paid $ 27,163 $ 16,177