Higher Google Page Rank for our web-sites

Some web sites of us or internet pages of customers of us have higher Google PR already.
Google Page Rank is a parameter for rating web sites.

Using ethical SEO search engine optimization, optimizating the code and structure, activity and patience - these things make our good results for years:

http://www.londoncleaning.org.uk/ - PR 3
http://www.medicadepot.com/ - PR 3
http://www.ideabg.com/en/ - PR 3
http://www.thesmallad.com/ - PR 3
http://www.knigoterapia.com/ - PR 3
http://www.drgeorgiev99.com/ - PR 3
http://lang.uft-plovdiv.bg/ - PR 4
http://www.eurodrugmart.com/ - PR 3
http://www.ideabg.com/bg/ - PR 2