There are different Business Directories :

Try all different Business Directories offered by
Every Engine has different results,
Most companies are listed in serveral directories
but the results are not the same ...

Products / Produkte
find products
and order them directly (example mosaic tiles, aromas, clothes)

Products via Amazon

Business to Consumers
Companies froviding Products or Sevices for End Users
(example Restaurant)

B2C Qatcom by Qatcom

Business to Business
Companies providing Products for Professionals
(example Manufacturer of Kitchens)
B2C Qatcom by Qatcom

search in another country
Phone Book of the
Phone Book of the
Annuaire du
maybe the company you are looking for
has offices in another country

good luck ...