Mitsui Chemicals, Inc. announced the appointment of Taku Koda as director, Elastomer department, Polymeric Material Laboratory, R&D center and appointment of Hiroyasu Yamaoka as director, Hard Polymer Department, Polymeric Materials Laboratory, R& center. Mr. Taku is currently with Mirsui Chemical America and Mr. Hiroyasu is currently Director, director, Elastomer Department, Polymeric Materials Laboratory R&D Center.