A landmark Rs 18 crore defence export deal puts KELTRON firmly on the global naval technology map. https://english.mathrubhumi.com/news/kerala/keltron-rs-18cr-sonar-export-deal-hdgbgib5?utm_source=dlvr.it&utm_medium=mastodon #KELTRON #DefenceExports #PassiveSonar #NavalTechnology