Which five cement companies are world best cement comanies?

PowerPoint

http://www.argos.com.co/wps/wcm/connect/resources/file/eb4e7c00a7d65c9/Argos_general_presentation_15_January_07.pdf?MOD=AJPERES

This site has PowerPoint presentation that summarizes the global market It is dated Jan 2007 It is from a very reliable source

______________________________________________

...Actually, not the previous answer is not even close.

The largest cement companies in the world are Lafarge and Holcim. Argos doesn't even rank when you compare.

Goes to show you, always check your sources when you ask a 'Wiki' question and get an answer.