Process The Cleantan® recipe The process explained Easy implementation Time saving pH control with CO2 Chrome saving Publication & awards Patents Awards Leather fairs Reviewed articles Articles Lectures Book of abstract Media Upcoming events The team A brief history Solid background Contact DE 10 2009 018 232EP 2 421 995CN 2010 80017504US 2012 0144597F50224 WO-EPEP1987167B1DE19507572A1