https://www.maruwai.co.jp/en/rd-en/research-development-of-zirconia-that-has-both-high-level-of-intensity-and-fracture-toughness-1203 2020-09-20T10:29:14+00:00 weekly 0.6 https://www.maruwai.co.jp/rd/%e9%ab%98%e5%bc%b7%e5%ba%a6%e3%83%bb%e5%bc%b7%e9%9d%ad%e6%80%a7%e3%82%b8%e3%83%ab%e3%82%b3%e3%83%8b%e3%82%a2%e3%81%ae%e9%96%8b%e7%99%ba-690 2020-11-01T03:05:25+00:00 weekly 0.6