crystal frit TC-28A1 Suitable for double-firing floor tiles.Good flatness and high gloss,specially for genuine colour. COE:185(×10-7/oC)Softening Point:730oC Firing Temperature:1150-1180oC We are Zibo Tiancheng Glaze Co., Ltd. produce transparent frit,opaque frit,luster powder,printing glaze powder,as one of the largest producers and exporters in Shandong province,our products were exported to many countries and build good business relations.