Three Korean executives of Hitachi-LG Data Storage Inc. have agreed to plead guilty, pay a $25,000 criminal fine, and serve prison sentences from seven to eight months in the United States for participating in bid-rigging and price-fixing for the sale of optical disc drives. This the second round of antitrust charges. In the first round, Hitachi-LG agreed to pay a $21 million criminal fine for 14 counts of antitrust violations and one count of wire fraud.