Ceradyne to Host Teleconference "Update" Tuesday, November 27, 2007

COSTA MESA, Calif.-Ceradyne, Inc. (Nasdaq:CRDN) will host a teleconference in order to update investors on Ceradyne’s overview of both its short and longer term outlook. Ceradyne management feels that this teleconference would be helpful to answer investor questions.

We plan to cover the following:

-- Reiterate our 2007 and 2008 guidance

-- Comment on the status of our vehicle armor program, and the BULL(TM) in particular

-- Comment on body armor opportunities including the Company’s outlook on XSAPI and ESAPI

-- Comment on increased demand for solar related ceramic crucibles

-- Comment on positive performance of Ceradyne’s two 2007 acquisitions of Minco and EaglePicher Boron

-- Other non-military opportunities

Any investor or interested individual can listen to the teleconference, which is scheduled to begin at 8 a.m. PST (11 a.m. EST) on November 27, 2007. To participate in the teleconference, please call toll free 877-717-3046 (or 706-634-6364 for international callers) approximately 10 minutes prior to the above start time.

You may also listen to the teleconference live via the Internet at www.ceradyne.com or www.earnings.com. For those unable to attend, these web sites will host an archive of the call. A telephone playback will be available beginning at 11 a.m. PST on November 27 through 9 p.m. PST on November 29, 2007. The playback can be accessed by calling 800-642-1687 (or 706-645-9291 for international callers) and providing Conference ID 25428976.