Malmo, Sweden-based Perstorp appointed Valentina Serra Holm vice president for engineered fluids. Previous appointments include senior global leadership positions at Nynäs AB, Calumet Specialty Products Partners and Koras AG, and since 2016 she has also served as president of UEIL, the Union of the European Lubricants Industry.  Calumet Specialty Products Partners announced a long-term distribution partnership with SIP Specialty Oils and Fluids to broaden the footprint in the European market for Calumet’s naphthenic base oils and growing demand for more supply options. SIP will market, sell, warehouse and support the full Calumet naphthenic products portfolio with immediate effect.