Quarterly report pursuant to Section 13 or 15(d)

Stock-based compensation (Details)

v3.19.2
Stock-based compensation (Details) - USD ($)
3 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Fair value of stock-options granted to an employee (Note 15) $ 13,828
Stock-options [Member]    
Fair value of stock-options granted to an employee (Note 15) $ 13,828