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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Net income $ 19,269,642 $ 23,414,347
Depreciation and amortization 1,174,822 1,505,195
Stock based compensation 196,183 345,416
Derivative gain (934,260) (1,588,888)
Bad debt expense 108,085 505,224
Deferred income taxes 37,281 (123,177)
Trade accounts and other receivables (11,392,154) (9,231,358)
Advances to suppliers (251,171) (3,367,119)
Inventory (2,925,143) (5,530,989)
Trade accounts payable (1,928,259) 895,001
Accrued expenses and other liabilities 758,783 74,063
Accrued taxes payable 591,470 785,383
Other payables 13,327 (30,183)
Advances from customers 518,718 132,572
Net Cash Provided by Operating Activities 5,237,324 7,785,487
Net investment in banker's acceptances (82,149)   
Advances for purchases of property and equipment and intangible assets (5,191,385) (10,454,529)
Purchase of property and equipment (352,362) (63,852)
Net Cash Used in Investing Activities (5,625,896) (10,518,381)
Proceeds from issuance of notes payable    3,687,996
Payments of notes payable    (3,835,515)
Borrowings from related party 595,670 227,903
Proceeds from exercise of warrants    2,583,000
Net Cash Provided by Financing Activity 595,670 2,663,384
Effect of Exchange Rate Changes on Cash 151,670 126,843
Net Increase in Cash 358,768 57,333
Cash and Cash Equivalents at Beginning of Year 3,692,086 3,634,753
Cash and Cash Equivalents at End of Year 4,050,854 3,692,086
Cash paid for interest 248,018 168,258
Cash paid for income taxes 4,532,592 2,839,548
Accounts payable for purchases of property and equipment 143,151 100,160
Accounts receivable collected with banker's acceptances 6,102,570   
Inventory purchased with banker's acceptances $ 6,102,570