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Note 2 - INVENTORIES (Details) - Schedule of Inventory - USD ($)
Nov. 30, 2018
Feb. 28, 2018
Inventory, Current [Member]    
Note 2 - INVENTORIES (Details) - Schedule of Inventory [Line Items]    
Book inventory $ 30,905,100 $ 27,078,600
Inventory valuation allowance (259,100) (460,000)
Inventories net–current 30,646,000 26,618,600
Inventory, Noncurrent [Member]    
Note 2 - INVENTORIES (Details) - Schedule of Inventory [Line Items]    
Book inventory 1,021,400 707,700
Inventory valuation allowance (417,400) (271,800)
Inventories net–non-current $ 604,000 $ 435,900