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20-F
EX-2.5
EX-4.9
EX-4.10
EX-4.11
EX-4.12
EX-4.13
EX-8.1
EX-12.1
EX-12.2
EX-13.1
EX-13.2
EX-15.1
EX-15.2
EX-99.2
EX-99.3
Inventory (Tables)
12 Months Ended
Oct. 31, 2021
Inventories [Abstract]
Schedule of inventory
October 31, 2021
October 31, 2020
$
$
Raw material
850,416
140,419
Finished goods
347,391
39,575
1,197,807
179,994