Whitehat SEO linkbuildning, long term, big project, monthly payments

We run an established US shopping comparison site launched in 2006 with PageRank 5 and many good links and strong content (rather easy to create links to). We want to further increase the link popularity and PageRank for our .com site. We know this takes time and effort so we want this to be an ongoing project with monthly payments. We will need to see examples of your previous and related work. Description of project: -Non reciprocal, whitehat, relevant and longterm link building. It's very important that this is done "legally" (according to google). Please consider this project as something extra, since we are live in many countries, if you do a good job, there is more coming. We are looking for a english speaking/writing and cunning SEO EXPERT from Asia to have a long term partnership with, the first term will be three months and after that we will do an evaluation. Please not only WHITE HAT! Thanks Thank you.