Tokyo, April 24, 2011 (ABN Newswire) - On 15th April, 2011, Sumitomo Heavy Industries Ltd (TYO:6302) (President Yoshinobu NAKAMURA, “Sumitomo Heavy Industries” hereafter) signed the implementation contract for the Proton Therapy System with Samsung Medical Centre (Seoul, Korea), the key hospital of the Samsung Group in Korea.