Accounts and Bills Receivable

12 Months Ended

Mar. 31, 2013

Text Block [Abstract]

Accounts and Bills Receivable

7. ACCOUNTS AND BILLS RECEIVABLE

	March 31, 2013		March 31, 2012
	US$		US$
Accounts receivable		9,673,986		13,318,143
Bills receivable		10,039,622		16,954,919
Accounts and bills receivable		19,713,608		30,273,062

	Fiscal years ended
	March 31, 2013		March 31, 2012			March 31, 2011
	US$		US$			US$
Allowance for doubtful accounts:
Balance at beginning of fiscal year		—		768			115,024
Additions		—		—			768
Amount written-off as uncollectible during the fiscal year		—		(768	)		(115,024	)
Balance at end of fiscal year		—		—			768