400 invited guests, a party for the employees and an open day for more than 8000 visitors: this is how Perlen Papier AG celebrates its 150th anniversary on September 8 and 9.

Two hundred years, seven generations, many successes and a few setbacks, too: Matthias Wiesmann has told the “chemical” story of the Schnorf Family in the series Swiss Pioneers of Business and Technology.

The CPH Group celebrated the 200th anniversary of its foundation in style with a gala dinner followed with a major public party on its original Uetikon (Zurich) site on Saturday 26 May. And thousands came in the excellent weather to join in the festivities.

An exhibition at the Uetikon Museum tells the story of the town's chemicals factory since its foundation in 1818.