Granite worktops restor and polish


I have a new kitchen with acres of black granite. I've just noticed that there are a few stains where items haven't been moved and moisture has collected underneath and I can also see some cup-rings when the light hits the surface at certain angles. Is there any kind of commercial restorer/cleaner/polisher that will get rid of these marks? Should the surfaces be sealed regularly?
THX
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Won't ordinary household cleaner (e.g. Cillit Bang) shift these marks? If you need an abrasive to do it then you might try T-Cut.
Rob Graham
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.