Our Products Altifil™ Versatility in a bright hydrous aluminum silicate. Grades RG1-3mm RG16 RG140 675 445 330 Altiplus™ Your Talc and Kaolin Alternative. Grades 1045 645 445 330 225 Altibright™ Your Talc and Kaolin Alternative. Grades 2400 Altiblock™ ALTIBLOCK - The performance of DE and Talc in one.