Calcium Silicon in bulk quantities 3,000MT/Month Ca30Si55, Ca28Si55, Ca24Si58 Calcium Silicon Ca30Si55, Ca28Si55, Ca24Si58 Calcium Silicon with top quality & most competetive prices in bulk quantities. Calcium Silicon Ca30Si55 : Ca30 Si55-65% Calcium Silicon Ca28Si55 : Ca28 Si55-65% Calcium Silicon Ca24Si58 : Ca24 Si55-65% We can produce according to your required specifications and different sizes. email: snglobal(at)