TAIPEI (AFP) - Taiwan has developed a radar-absorbent material in a breakthrough in the island's development of stealth technology, local media reported Monday. Tests showed that a navy 50-tonne Seagull-class missile boat painted with the material was not spotted on a radar screen until it could be seen with the naked eye, the United Daily News said. The navy declined to comment on the report. It was not immediately clear if the material would be used in the navy's fleet of 10 locally manufactured 171-tonne missile boats.