In May 2005 at the 10th International Conference on New Diamond Science and Technology in Tsukuba, Japan, Mao and his research team astonished the world with a ten-carat diamond made by the chemical vapor deposition (CVD) process.
去年 5 月，毛河光的研究團隊參加日本第 10 屆「國際新鑽石科技會議」，發表了一顆實驗室製造的 10 克拉 CVD（化學氣相沈積法）人造鑽石，震驚國際。