Japan's Tamura city has entered a collaboration project with Chiang Rai's Pongpha subdistrict to develop Tham Luang cave as a new attraction with better safety standards.
Mr Iwamoto (right) and Mr Honda visited Pongpha subdistrict in Chiang Rai province this week.
The signing on the cooperation took place on Wednesday. Details of the development will be discussed further.
Jinichi Honda, mayor of Tamura in Fukushima prefecture, said the city has two famous caves, Abukuma and Irimizu.
The two caves used to attract 300,000 visitors a year, but the numbers dropped to 200,000 after the Fukushima tsunami and nuclear disaster in 2011.
The city kept promoting the caves as a destination with better safety standards.
Mr Honda said Tamura wants to help develop tourism in Pongpha, including the famous cave that trapped 13 footballers a month ago, by using the Japanese cave management model.
"Tham Luang cave has high potential to be promoted as a new attraction, but it need to improve walkways, decorate with lights, install safety alarm systems as well as safety management," he said.
In addition, the Thai cave should install ceramic lights for better aesthetics and safety, he said. Both parties will have to work more in operations with local authorities to meet community requirements.
Yasunori Iwamoto, chief executive of Codomo Energy Co, the maker of Luna Ware ceramic lights, said the company provided equipment to help rescue the football players and their coach who were stranded in Tham Luang cave last month.
Mr Iwamoto, also an adviser to the city of Tamura, said the company will promote Tham Luang cave to Japanese tourists and travel firms involved with the limestone cave network in Japan.
Codomo Energy is entering Thailand as part of an overseas expansion. It will soon install Luna Ware products for testing at Hua Lamphong subway station.
