... /6,4/9,6/12,12/24mm Old craft W,X type mosi2 glass heater rod with firm welding point MoSi2 heating ... atmosphere, the surface heat to generate a pre-pressing quartz glass, it can keep the membrane products, no longer oxidation. Therefore ... /9,Φ6/12,Φ9/18,Φ12/24 and so on. B. physical and chemical properties:1. Physical Properties Bulk DensityFlexural StrengthRigidityOpen ...