pH: 3.9～4.5 Specific Surface Area (BET) 150±15 Loss on ignition ≤ 2.0 Tamped density 40 ～ 60 Product application: Silicone rubber,rubber, offset printing, medicines, cosmetics, creams, thermal insulation materials

pH: 3.9～4.5 Specific Surface Area (BET) 200±20 Loss on ignition ≤ 2.0 Tamped density 40 ～ 60 Product application: Silicone rubber, adhesives,inks, coatings,pharma- ceuticals, defoamers, thixotropic resins, gelcoat resins

pH: 3.7～4.5 Specific Surface Area (BET) 260±20 Loss on ignition ≤ 2.0 Tamped density 40 ～ 60 Product application: HTV& LSR Silicone Rubbers,Adhesives, Coatings& PrintingInks, UPR resins, Thermal Materials

pH: 3.7～4.5 Specific Surface Area (BET) 300±25 Loss on ignition ≤ 2.5 Tamped density 40 ～ 60 Product application: Silicone rubber,rubber,coatings,paint

pH: 3.7～4.5 Specific Surface Area (BET) 300±30 Loss on ignition ≤ 2.5 Tamped density 40 ～ 60 Product application: Silicone rubber, defoamer,ink,adhesive,pesticide