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 ...

find products
and order them directly (example Sony Cameras, Pokemon, Video Games)

Products via Amazon

Yellow Pages B2C
Business to Consumers
Companies froviding Products or Sevices for End Users
(example Restaurant)

Seccion Amarilla



Yellow Pages B2B
Business to Business
Companies providing Products for Professionals
(example Manufacturer of Kitchens)

Gov Pages
search through the Government

Seccion Amarilla
Mexico Gov Search
this search engine goes through
all the Mexican ministeries,
maybe the company you are looking for
has been mentioned.

other Countries
search in another country

Phone Book of the
Phone Book of the
maybe the person you are looking for has moved
and can be cound through the directory of another country

good luck ...