SUWON, South Korea, July 12 (Reuters) – The trial of a South Korean chip executive accused of stealing sensitive information developed by Samsung Electronics (005930.KS) began on Wednesday in a case that underscores South Korea's crackdown on industrial espionage. Prosecutors have alleged that Choi Jinseog, a former Samsung Elec executive and a South Korean chip expert, stole sensitive information developed by the world's top memory chipmaker to help his client set up a chip factory in China. The high-profile criminal case against Choi, an award-winning engineer once seen as a star in South Korea's chip industry, highlights Seoul's efforts to…