Summary of Significant Accounting Policies (Tables)

12 Months Ended

May 31, 2018

Accounting Policies [Abstract]

Schedule of Useful Life of Property, Plant and Equipment

Greystone’s property, plant and equipment is stated at cost. Depreciation expense is computed using the straight-line method over the estimated useful lives, as follows:

Plant buildings	39 years
Production machinery and equipment	5-12 years
Leasehold improvements	5-7 years
Furniture & fixtures	3-5 years