'EUROQUARZ GmbH', Euroquarz, EUROQUARZ, euroquarz, Euroquartz, euroquartz, Dorsten, quarzwerke, Ottendorf-Okrilla, Ottendorf, Okrilla, SILIMIX, SILICA-MIX, AQUACOLOR, AQUAGRAN, MICROSIL, MIKROSIL, COLORQUARZ, AQUALIN, AQUACIT, CHLORAMIN-EX, KONTRASIL, SILIGRAN-LOTUS, Terracolor, quartz, silica, gravel, pack, flour, sand, pebbles, filter, coal, filtercoal, filtration, water, lignite, anthracite, chlorine, blasting, grit, smelting slag, filler, coating, ceiling, casting, foundry, molding mouling, refractory, colorquartz, mining, quarry, stone carpet, flooring, coating, decogran, premixed silica, packaging, Huenxe, Heerlen, Maastricht, detoxication, dechlorination, deferrization, demanganation, refractory, EN 12620, EN 12904, EN 12907, EN 12909, EN 13139, ISO 3262, ISO 11126