(Reuters) - Swiss nylon maker EMS Chemie reported an almost double-digit percentage rise in 2024 net operating income, despite a stronger Swiss franc and subdued market environment, it said on Friday. Net operating income grew 9.5% from a year earlier to 539 million euros ($559.10 million). The group proposed a dividend of 17.25 euros per share. ($1 = 0.9640 euros) (Reporting by Alberto Chiumento in Gdansk; Editing by Milla Nissi and Christopher Cushing) (Reuters) - Swiss nylon maker EMS Chemie reported an almost double-digit percentage rise in 2024 net operating income, despite a stronger Swiss franc and subdued market environment, it said on Friday. Net operating income grew 9.5% from a year earlier to 539 million euros ($559.10 million). The group proposed a dividend of 17.25 euros per share. ($1 = 0.9640 euros) (Reporting by Alberto Chiumento in Gdansk; Editing by Milla Nissi and Christopher Cushing)