Companies in the Calculating & Adding Machs Supplies (Wholesale) industry are involved in the wholesale distribution of office equipment specifically related to calculating and adding machines. This includes a range of products such as calculators, cash registers, adding machines, and other related supplies. These companies typically purchase products from manufacturers and then distribute them to retailers, office supply stores, and other wholesalers. The industry is highly competitive and requires companies to stay up-to-date with the latest technology and trends in order to remain successful.