Jola Spezialschalter K. Mattil & Co. KG is a medium-sized company based on Lambrecht (Palatinate) which today employs around 70 people. Jola was founded in 1952 as a sister company of the former Tuchfabrik Gebrueder Haas; its purpose was to develop and market a company invention - a water-tight limit switch - as well as a level control based on the same principle. Today, Jola is a well-known manufacturer in the area of level control and leakage detection for liquids.