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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) | 6 Months Ended
--- | ---
Jun. 30, 2013 | Jun. 30, 2012
Cash flows from operating activities |  |
Net income | $ 1,517,063 | $ 1,808,923
Adjustments to reconcile net income to net cash (used in) operating activities |  |
Stock-based compensation expense | 43,737 | 124,077
Depreciation and amortization | 300,840 | 246,448
Change in fair value of warrants liability | 4,413 | 92,067
Provision for doubtful accounts | 27,224 | 27,942
Changes in assets and liabilities: |  |
(Increase) in accounts receivable | (812,221) | (282,688)
(Increase) in prepayments and other current assets | (3,268,571) | (522,831)
Decrease (Increase) in other receivables | 215,084 | (1,670,623)
Decrease (Increase) in inventories | (18,953) | 733,009
Decrease (Increase) in tax receivable | (3,839) | 384,599
Increase in accounts payable | 840 | 6,115
Decrease (Increase) in advances from customers | 95,181 | (65,347)
Decrease (Increase) in accrued expenses and other current liabilities | 285,657 | (31,931)
Decrease (Increase) in taxes payable | 538,466 | (1,616,959)
Net cash (used in) operating activities | (1,075,079) | (767,199)
Cash flows from investing activities |  |
Capital expenditures and other additions | (1,115,276) | (2,405,707)
Net cash used in investing activities | (1,115,276) | (2,405,707)
Cash flows from financing activities |  |
Proceeds from bank loan | 2,413,250 | 2,373,145
Repayment of bank loan | (2,410,176) | (1,580,436)
Net cash provided by financing activities | 3,074 | 792,709
Effect of exchange rate fluctuations on cash and cash equivalents | 25,197 | (206,347)
Net decrease in cash and cash equivalents | (2,162,084) | (2,586,544)
Cash and cash equivalents at beginning of period | 3,505,330 | 3,694,486
Cash and cash equivalents at end of period | 1,343,246 | 1,107,942
Supplemental cash flow information |  |
Income tax paid | 231,371 | 779,678
Interest paid | $ 76,187 | $ 64,904

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