Length:1-4mm,5-8mm color:grey,white Main use: brake block type:A-360,A4-30,A5-70,A5-60 Used: heat resistant , asbestos sheet Analysis : Item No.6-40,5-50,5-60,5-70,4-30,4-20,3-60Asbestos content≥ 98%MaterialMineral fiberFiber length0-14 mmColourWhiteWhiteness≥ 95%Grade99%Thermal Conductivity0.08W/(m.K)Mohs hardness scale6Maximum Operation Temperature1450Area of OriginHeBei province