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4. Inventories (Details) - Schedule of Inventory, Current - USD ($)
Mar. 31, 2016
Mar. 31, 2015
Schedule of Inventory, Current [Abstract]    
Purchased parts $ 3,420,249 $ 2,746,671
Work-in-process 1,446,293 1,514,356
Finished goods 102,490 334
Less: Allowance for obsolete inventory (290,000) (229,287)
$ 4,679,032 $ 4,032,074