Dear TechNetters; I need information on the CTE (in x, y and z axes) of the various grades of FR-4, FR-5, polyimide, etc. from different raw material manufacturers. I am looking for names and contact information such as: Internet addresses, Snail Mail addresses, and/or telephone numbers of raw material suppliers. TIA Charlie Barker, Mfg. Eng. Input/Output, Inc Stafford, Texas 713/276-3328 [log in to unmask] http://www.i-o.com