List reasons for a large company having two separate departments to manage the purchase of each?

A large company may establish two separate departments for purchasing to specialize in different product categories, allowing for more focused expertise and tailored strategies. This can enhance efficiency, as each department can develop strong supplier relationships and negotiate better terms specific to their goods. Additionally, it allows for better risk management by diversifying purchasing strategies and mitigating supply chain disruptions. Lastly, distinct departments can support clearer accountability and performance metrics within the organization.