The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position.

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Property, Plant and Equipment (Details Narrative) - USD ($)	3 Months Ended
	Aug. 31, 2019	Aug. 31, 2018	May 31, 2019
Property, Plant and Equipment [Line Items]
Machinery and equipment	$ 7,861,233		$ 7,861,233
Estimated useful life	3 years 6 months
Depreciation expense	$ 1,303,968	$ 1,053,003
Molding Machines [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	12 years
Two Plant Buildings and Land [Member]
Property, Plant and Equipment [Line Items]
Carrying value of assets	$ 2,867,581
Service [Member]
Property, Plant and Equipment [Line Items]
Machinery and equipment	$ 1,054,726