Inventories (Tables)

12 Months Ended

Mar. 31, 2013

Inventory Disclosure [Abstract]

Summary of Inventories

	March 31, 2013		March 31, 2012
	US$		US$
Raw materials		2,791,811		2,716,414
Work in progress		878,718		780,588
Finished goods		1,721,803		1,877,190
		5,392,332		5,374,192