I want to know what does the Comissions Competition Directorate-general do encourage and controls competition in the industrial consideration within the cartel
Since this is not my area of expertise, I searched Google under the key words "Commission Competition Directorate-General" to get these possible sources:
http://ec.europa.eu/dgs/competition/index_en.htm
http://en.wikipedia.org/wiki/Directorate-General_for_Competition_(European_Commission)
http://www.reckon.co.uk/tags/dgcompetition
In the future, using the appropriate key words, you can find the information you desire more quickly by doing your own search.
I hope this helps. Thanks for asking.