CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
	May 31, 2013	May 31, 2012
Cash flows from operating activities
Net income	$ 49,405	$ 257,986
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred tax	(14,452)	(12,569)
Amortization expense	121,632	121,632
Depreciation expense	651,531	647,538
Provision for obsolete inventories		31,703
Loss on disposal of property, plant and equipment	5,825
Changes in operating assets and liabilities:
(Increase)/decrease in accounts receivable	(1,765,479)	11,633
Decrease/(increase) in inventories	7,764	(43,409)
(Increase)/decrease in other receivables and deposits	(51,163)	57,908
(Increase)/decrease in tax recoverable	(568)	84,553
Decrease in deferred income	(582,826)	(417,586)
Increase/(decrease) in accounts payable	3,036,282	(224,854)
Increase in tax payables	267,342	330,216
(Decrease)/increase in accrued liabilities and other payables	(41,956)	153,494
Net cash provided by operating activities	1,683,337	998,245
Cash flows from investing activities
Purchase of property, plant and equipment	(131,351)	(13,701)
Decrease in available-for-sale investments	323,576
Increase in amount due from a related company	(41,146)	(2,078,955)
Net cash provided from/(used in) investing activities	151,079	(2,092,656)
Cash flows from financing activities
Decrease in amount due to related companies	39,190	(24,690)
Net cash provided from/(used in) financing activities	39,190	(24,690)
Net increase/(decrease) in cash and cash equivalents	1,873,606	(1,119,101)
Effect of exchange rate changes on cash and cash equivalents	85,237	59,160
Cash and cash equivalents at beginning of year	3,520,248	4,580,189
Cash and cash equivalents at end of year	5,479,091	3,520,248
Cash paid for interest
Cash paid for income taxes		$ 58,662