CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Cash flows from operating activities:    
Net income $ 18,965 $ 790,956
Adjustments to reconcile net income to net cash provided by (used in) operating activities    
Depreciation and amortization 382,036 289,976
Interest expenses, non-cash   70,271
Change in operating assets and liabilities:    
Accounts and retention receivable 293,772 (653,791)
Inventories (292,381) (355,780)
Prepayments and other receivables 264,078 595,195
Accounts payable 772,635 (1,213,686)
Income tax payable (81,837) (57,797)
Other payables and accrued liabilities 119,066 (93,832)
Net cash provided by (used in) operating activities 1,476,334 (628,488)
Cash flows from investing activities:    
Purchase of plant and equipment (270) (21,663)
Payments on construction in progress (473,640) (2,544,583)
Net cash used in investing activities (473,910) (2,566,246)
Cash flows from financing activities:    
Change in restricted cash 525,492  
Advance from a related party   66,489
Payments on finance lease (34,432) (338,490)
Proceeds from notes payable, related party 1,580,903 1,500,000
Proceeds from short-term bank borrowings 2,157,932 1,527,142
Repayment on short-term bank borrowings (4,742,708)  
Net cash (used in) provided by financing activities (512,813) 2,755,141
Effect on exchange rate change on cash and cash equivalents 12,475 16,389
NET CHANGE IN CASH AND CASH EQUIVALENTS 502,086 (423,204)
BEGINNING OF PERIOD 2,317,456 823,717
END OF PERIOD 2,819,542 400,513
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:    
Cash paid for income taxes 127,603 213,586
Cash paid for interest $ 297,020 $ 123,537