Basis of Presentation and Accounting Policies (Policies)

9 Months Ended

Jan. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Property, Plant and Equipment

Property, plant and equipment

Property and equipment are stated at cost, which includes the acquisition price and any direct costs to bring the asset into use at its intended location, less accumulated amortization.

Amortization of property and equipment is calculated using the straight-line method to write off the cost, net of any estimated residual value, over their estimated useful lives of the assets as follows: Office equipment 5 years and electronic equipment 2 years. Amortization of office equipment is included in general and administrative expenses; amortization of research equipment is included in research and development expense.