[待更新] Granular activated charcoal: Granular activated carbon is produced from coconut shell charcoal by the process of steam activation. The coconut shell charcoal is fed into the rotary kiln and activated by steam at high temperature resulting in the evaporation of impurities and opening up of pores on the surface.±0.05 Hardness % 95.0 min 95.0 min... 95.0 min Ash Content% 5.0 max 4....
