... 3.oil free clean air delivery 1.ZYSR series fish aquaculture farm equipment applicationsZYSR series roots blower widely ... packing,paper making,aquaculture,sewage treatment,pneumatic conveying,etc2.fish aquaculture farm equipment major specifications Bore:50-200mm ... Oil,Anchor Bolt,flexible joint,non return valve.4.fish aquaculture farm equipment applicationSulphitation Process Filter Bed Agitation ...