VCT- Vinyl Composition Tile Standard commercial floor tile you can buy anywhere. the biggest draw back is the mastic. you have to use the very good, read expensive, industrial stuff to withstand petroleum based liquid spills. oil will soften most cheap mastics after a while.
I know this because I did my engine room in the shop with VCT and used a standard light duty mastic, read that as cheap, and it all came up.
John.