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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE (LOSS) INCOME (UNAUDITED) (USD $)	3 Months Ended		6 Months Ended
	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2014	Nov. 30, 2013
Net Sales	$ 1,133,600us-gaap_SalesRevenueNet	$ 934,841us-gaap_SalesRevenueNet	$ 2,168,050us-gaap_SalesRevenueNet	$ 1,948,580us-gaap_SalesRevenueNet
Cost of Sales	(826,357)us-gaap_CostOfRevenue	(679,197)us-gaap_CostOfRevenue	(1,550,896)us-gaap_CostOfRevenue	(1,432,645)us-gaap_CostOfRevenue
Gross Profit	307,243us-gaap_GrossProfit	255,644us-gaap_GrossProfit	617,154us-gaap_GrossProfit	515,935us-gaap_GrossProfit
Operating Expense:
Selling, general and administrative	375,020us-gaap_SellingGeneralAndAdministrativeExpense	366,357us-gaap_SellingGeneralAndAdministrativeExpense	713,336us-gaap_SellingGeneralAndAdministrativeExpense	709,160us-gaap_SellingGeneralAndAdministrativeExpense
Research and development	182,088us-gaap_ResearchAndDevelopmentExpense	136,789us-gaap_ResearchAndDevelopmentExpense	377,794us-gaap_ResearchAndDevelopmentExpense	228,046us-gaap_ResearchAndDevelopmentExpense
Total operating expenses	557,108us-gaap_OperatingExpenses	503,146us-gaap_OperatingExpenses	1,091,130us-gaap_OperatingExpenses	937,206us-gaap_OperatingExpenses
Loss from operations	(249,865)us-gaap_OperatingIncomeLoss	(247,502)us-gaap_OperatingIncomeLoss	(473,976)us-gaap_OperatingIncomeLoss	(421,271)us-gaap_OperatingIncomeLoss
Other Income (Expense):
Dividend and interest income	11,837us-gaap_InvestmentIncomeInterestAndDividend	4,145us-gaap_InvestmentIncomeInterestAndDividend	16,697us-gaap_InvestmentIncomeInterestAndDividend	10,199us-gaap_InvestmentIncomeInterestAndDividend
Interest expense			(17)us-gaap_InterestExpense
Total other income	11,837us-gaap_NonoperatingIncomeExpense	4,145us-gaap_NonoperatingIncomeExpense	16,680us-gaap_NonoperatingIncomeExpense	10,199us-gaap_NonoperatingIncomeExpense
Loss before income tax	(238,028)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	(243,357)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	(457,296)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	(411,072)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Provision for income taxes
Net loss	(238,028)us-gaap_NetIncomeLoss	(243,357)us-gaap_NetIncomeLoss	(457,296)us-gaap_NetIncomeLoss	(411,072)us-gaap_NetIncomeLoss
Basic net loss per common share (in Dollars per share)	$ (0.03)us-gaap_EarningsPerShareBasic	$ (0.03)us-gaap_EarningsPerShareBasic	$ (0.06)us-gaap_EarningsPerShareBasic	$ (0.06)us-gaap_EarningsPerShareBasic
Diluted net loss per common share (in Dollars per share)	$ (0.03)us-gaap_EarningsPerShareDiluted	$ (0.03)us-gaap_EarningsPerShareDiluted	$ (0.06)us-gaap_EarningsPerShareDiluted	$ (0.06)us-gaap_EarningsPerShareDiluted
Weighted average number of common and common equivalent shares:
Basic (in Shares)	7,551,972us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	7,278,967us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	7,549,894us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	7,277,659us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Diluted (in Shares)	7,551,972us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	7,278,967us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	7,549,894us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	7,277,659us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Net loss	(238,028)us-gaap_NetIncomeLoss	(243,357)us-gaap_NetIncomeLoss	(457,296)us-gaap_NetIncomeLoss	(411,072)us-gaap_NetIncomeLoss
Other comprehensive loss, net of tax:
Foreign currency translation	(744)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	77us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	(1,678)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	(14)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax
Comprehensive loss	$ (238,772)us-gaap_ComprehensiveIncomeNetOfTax	$ (243,280)us-gaap_ComprehensiveIncomeNetOfTax	$ (458,974)us-gaap_ComprehensiveIncomeNetOfTax	$ (411,086)us-gaap_ComprehensiveIncomeNetOfTax

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The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

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-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 4

-Article 5



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 330

-SubTopic 10

-Section 30

-Paragraph 8

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (a)

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-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 45

-Paragraph 16

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

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-Publisher FASB

-Name Accounting Standards Codification

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