About SUMIYA HITOSHI
About 住友電気工業
About SEIテクニカルレビュー
About diamond
About synthetic mineral
About nano crystal
About graphite
About very high pressure
About very high temperature
About heating
About transformation and conversion
About sintering
About translucency
About hard material
About strength
About heat resistance
About indirect heating
About high strength
About high-hard material
About synthetic diamond
About polycrystalline diamond
About direct conversion
About Carbon and its compounds
About 合成ダイヤモンド
About 展開
About 高硬度
About 多結晶ダイヤモンド