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Warranty Provision (Tables)
 12 Months Ended
Mar. 31, 2015
Guarantees [Abstract]  
Summary of Warranty Activity

The Company’s warranty activity during the fiscal years ended March 31, 2015, 2014 and 2013 is summarized below:

 

     Fiscal years ended  
     March 31,
2015		      March 31,
2014		      March 31,
2013		  
     US$      US$      US$  

Balance at beginning of fiscal year

      869,734         403,627         729,528   

Additional provision

      173,500         485,229         —     

Reversal of unutilized amounts

      (172,234 )       (19,122 )       (325,901 ) 
  

 

 

     

 

 

     

 

 

  

Balance at end of fiscal year

   871,000      869,734      403,627