Types of Link building

[eGrove Systems]

what are the different types of link building?

[dzine]

From your own website:

The bigger understanding of SEO

Search engine optimization is a very important component of wholesome Internet marketing efforts. Our panoptic view underlines our comprehensive SEO services which ensure that your website is enriched in all possible ways, from keyword rich content to quality links to directory submissions. So that high rankings ensue as a natural consequence of a consummate website.

Our strategy

We undertake the following processes to ensure that you remain at the top of all major search engine results safer and longer.

Keyword research and analysis
Content modification and addition
Link Popularity Campaign
Article writing & submissions
Search engine and Directory submissions
Social Media Tagging
Blogs submissions
Ever vigilant Research and Tracking
Monthly rank reports and analysis

My bold.

There you have it
Ok, you've missed out the most important ones, but since your company is reported to employ lots of people with "Proven Business Knowledge", I presume you left those out on purpose.