Online search of databases containing fresh and frozen food distributors in 3 countries

I need someone to search and find at least 30 websites containing databases (at least 100 contacts per website) of food distributors of fresh and/or frozen products in France, Germany and Austria. The websites to be searched must contain a lot of data (the aim is to map all distributors present) and at least the website or an e-mail reference of the individual distributors. Example: Just to make you understand better: I therefore need to find valuable sources containing a lot of data for my client to view. After his approval I will look for someone to do the data scraping work.