Solids Control World solemnly declares that we only produce the replacement screens but not original ones. We do not manufacture screens for MI SWACO ,Derrick ,Brandt ,KEMTRON,Fluids system, National. MI SWACO ,Derrick,Brandt ,KEMTRON,Fluids system, National company owns trademarks . We manufacture replacement screens that give our customer an alternative option for their solids control needs.