TREFIL® 1313-400 | HPF The Mineral Engineers, a division of Quarzwerke Group | TREFIL® 1313-400 is a mineral filler that is produced from natural anhydrite by grinding with subsequent air separation. It does not contain any additives of activators, with an average grain size of 6μm. This product is used in different applications in ...view more TREFIL® 1313-400 is a mineral filler that is produced from natural anhydrite by grinding with subsequent air separation. It does not contain any additives of activators, with an average grain size of 6μm. This product is used in different applications in the paint and coatings industry. view less |