Significant Accounting Policies (Details 2) - USD ($)	May 31, 2020	May 31, 2019
Property, plant and equipment, gross	$ 2,542,769	$ 2,612,000
Less accumulated depreciation	(1,890,633)	(1,858,593)
Property, plant and equipment, net	652,136	753,407
Land
Property, plant and equipment, gross	299,000	299,000
Buildings and Improvements
Property, plant and equipment, gross	1,847,505	1,814,524
Furniture, Fixtures and Equipment
Property, plant and equipment, gross	$ 396,264	$ 498,476

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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