Japanese companies are promoting their defense equipment and technologies to buyers and military representatives at a four-day international security exhibit that got under way Monday in Bangkok.

Twelve companies, including Kawasaki Heavy Industries Ltd., NEC Corp. and chemical maker Teijin Ltd., took part in the Japanese pavilion, which drew a visit from Thai Deputy Prime Minister and Defense Minister Gen. Prawit Wongsuwan.

Almost 300 manufacturers of defense equipment and security technology from 23 countries are participating in Defense and Security 2015, a biennial munitions and security event aimed at enhancing the military capabilities of Southeast Asian countries.

The Abe administration in April 2014 scrapped Japan's three principles sharply limiting arms exports and instead started encouraging exports of defense-related devices.

"Kawasaki Heavy Industries is able to participate in the defense and security event for the first time because of the change in the Japanese government's policy," said Hideki Yamaoka, an associate officer of the machine manufacturer, which makes C-2 transport aircraft and P-1 patrol aircraft.

"We hope to introduce our advanced aircraft capabilities to Thai people," he said.

Thailand is reportedly interested in ShinMaywa Industries Ltd.'s US-2 amphibious rescue aircraft used by the Maritime Self-Defense Force.