Here are two advices from me about increasing your Facebook page likes. We all know that is hard to do especially for new companies which usually have promo budget limit.
1. The most effective method is to share "likes" with other companies, nowadays there are a lot of forums, web-sites, ect. where you can post your link and others will like it. For example, you can join eMarketing Association Network group on LinkedIn [linkedin.com
] This group really help my Facebook page and game me more than 100 likes.
2. Ask your friends to "like" your page.