... Glassfiber, FR--Flame Retardant,ST--Super Tough, HR--Heat Resistance, WR--Wear Resisatnce, CF-Carbon Fiber, MF-Mineral Fiber Product Division Typical ... gradeFiller %FR UL-94 CharacteristicsABSheat resistance grade (HR)2010-HR950HBHigh ... -T60HBA2200HF-T70HBA2200HF-T80HB ABS (ABS+GF,GF&FR,FR,HR,PC/ABS, PMMA/ABS alloy, etc)