wacker chemie ag - divided into 5 divisions - derives most of its products from two main raw materials: silicon and ethylene. siltronic supplies the semi-conductor market with wafers. wacker polysilicon produces hyper-pure polysilicon for use in electronic and solar wafers. wacker silicones serves end markets like construction, automobile, paints, textiles, and paper. starting from ethylene, wacker polymers serves mainly the construction industry with redispersible powders and several other industries with dispersions. wacker biosolutions focuses on using bio-technological processes to serve its customers. wacker polymers, a division of wacker chemie ag has appointed peter summo (48) as its next president, effective 1 october. summo previously headed the engineering silicones business unit at wacker silicones. he is succeeding arno von der eltz, who is retiring on this date.