Graver Technologies supplies equipment for ultrapure water filtration and chemical-mechanical planarisation slurry filtration. For ultrapure water production and management, the company supplies depth filters for pre-reverse osmosis applications; deionisation resin traps; pad prefilters; ion exchange resins; and filters for post-process water recycling. Graver Technologies has distribution centres in the US, China and Singapore. Its parent company is The Marmon Group, which is part of the Berkshire Hathaway conglomerate.