moving part of my contact slist from one Zoho log-in to a new zhoho login

moving part of my contact slist from one Zoho log-in to a new zhoho login

I am part of a start-up that is growing quickly.  I was using my personal zoho account to track leads etc.. until we could afford our own for the business.  Now that we can I want to find a way to easily export the contacts for my personal zoho to the new business account.  Has anyone done this?