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Inventories and major vendors
12 Months Ended
Oct. 31, 2017
Inventory Disclosure [Abstract]  
Inventories and major vendors
Note 4 - Inventories and major vendors
 
Inventories, consisting of materials, labor and manufacturing overhead, are stated at the lower of cost or market. Cost has been determined using the weighted average cost method. In June 2015, the Company acquired Rel-Tech, a company that valued its inventories using specific identification (last purchase price) on a FIFO basis. As of July 31, 2016, Rel-Tech values its inventory cost using the weighted average cost of accounting. Inventories consist of the following (in thousands): 
 
  2017 2016 
        
Raw materials and supplies $2,520 $2,642 
Work in process  194  279 
Finished goods  3,395  3,101 
        
Totals $6,109 $6,022 
 
Purchases of inventory from two major vendors during fiscal 2017 represented 7% and 5%, respectively, of total inventory purchases compared to two major vendors who represented 9% and 6%, respectively, of total inventory purchases in fiscal 2016. The Company has arrangements with these vendors to purchase product based on purchase orders periodically issued by the Company.