I've tried to find their mission statement but it doesn't seem to feature on their website. However, if you go to the Information page you can contact them to ask some questions about their mission etc. You can also learn a lot about them and their objectives from the home page of the site.
You can find the vision statement in this presentation. The objectives statement below that is the same as a mission statement, it's just a more modern name for the same thing. Wipro have three main objectives, which is what used to be called a threefold mission.