CDD/EDD Import Export Companies

VP at a bank ($1.5BUSA)
I am looking to see what if any CDD/EDD you are doing for import/export companies.  With the Amazon boom and our current influx of businesses stating they are importing and exporting goods we are finding CDD a challenge with our offices.  Several do not have locations as they are operating as brokers.  I am interesting to see if others have had an increase and what, if any, other steps you may have taken to validate that they are importing/exporting items.  
We do site visits and internet searches on addresses, names, vendors and their websites.