Export Sales (Details) - Schedule of export sales - USD ($)	9 Months Ended
	Aug. 31, 2020	Aug. 31, 2019
Canada [Member]
Revenue from External Customer [Line Items]
Export sales	$ 2,945,773	$ 3,311,535
China [Member]
Revenue from External Customer [Line Items]
Export sales	3,948,811	4,240,122
Other Asian Countries [Member]
Revenue from External Customer [Line Items]
Export sales	1,099,040	1,811,454
South America [Member]
Revenue from External Customer [Line Items]
Export sales	143,928	394,140
Europe [Member]
Revenue from External Customer [Line Items]
Export sales	$ 843,747	$ 931,916