Research your raw materials and understand how your materials are made down to the ground. For example, if you are using acetone, know that cumene may be a tier one component, but ultimately all the materials used to make acetone come from crude oil, which comes from the ground. Click here for some examples
Collect supplier address data during year end pricing by product:
Transportation hubs: Ports/Airports, etc...
Country of Origin
Sub-tier Supplier Address information
Monitor using google alerts/subscriptions; document in a way to monitor trends (excel/database)