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PREPAYMENT AND OTHER CURRENT ASSETS
6 Months Ended
Jun. 30, 2012
Prepayment and Other Current Assets [Abstract]  
Prepayment and Other Current Assets [Text Block]
4. PREPAYMENT AND OTHER CURRENT ASSETS

 

Prepayment and other current assets consist of the following:

 

    June 30,     December 31,  
    2012     2011  
    US$     US$  
Advances to suppliers     4,745,727       4,348,847  
Prepayment for equipment purchase     2,435,068       2,300,415  
Other prepaid expenses     107,720       64,739  
      7,288,515       6,714,001