Volcanic efficient filter biofilm light filter through beneficiation, crushing, screening, grinding series of processing of the particulate filter, the main component of silicon, aluminum, manganese, iron and other minerals and dozens trace elements, the performance of particles close circle, color is red, black and brown, porous lightweight, particle size can be produced according to different requirements. Applicable to micro-organisms on the surface growth, reproduction, the formation of biofilms. Volcanic pebbles and media belong to the same natural water filter. Contact: Ms.Ella Cell phone:0086-18231421837 QQ:3195095761
