TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Parameters: Less than 10 wt % of the particles of the graphite powder is larger than 40 mesh, and the remaining particles of the graphite powder have a size of 40-80 mesh.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Parameters: Less than 10 wt % of the particles of the graphite powder is larger than 40 mesh, and the remaining particles of the graphite powder have a size of 40-80 mesh.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The mixture further comprises 1-10 wt.% free radical initiator, 1-10 wt.% mold releasing agent, 5-20 wt.% low shrinking agent, 1-10 wt.% tackifier, 10-35 wt.% solvent based on the weight of the vinyl ester resin. Preferred Components: The free radical initiator is peroxide, hydroperoxide, azonitrile, redox systems, persulfates, and perbenzoates. It can be t-butyl peroxybenzoate. The mold-releasing agent is wax or preferably metal stearate. The tackifier is alkaline earth metal oxides, alkaline earth metal hydroxides, carbodiamides, aziridines, or polyisocyanates. It can be calcium oxide or magnesium oxide. The solvent is styrene monomer, alpha-methyl styrene monomer, chloro-styrene monomer, vinyl toluene monomer, divinyl toluene monomer, diallylphthalate monomer, or methyl methacrylate monomer. It can be styrene monomer.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The low shrinking agent is styrene-monomer-diluted polystyrene resin, copolymer of styrene and acrylic acid, poly(vinyl acetate), copolymer of vinyl acetate and acrylic acid, copolymer of vinyl acetate and itaconic acid, and terpolymer of vinyl acetate, acrylic acid, or itaconic acid. It can be styrene-monomer-diluted polystyrene resin. The vinyl ester is bisphenol-A epoxy-based methacrylate, bisphenol-A epoxy-based acrylate, tetrabromo bisphenol-A epoxy-based methacrylate, and/or phenol-novolac epoxy-based methacrylate. The vinyl ester resin is phenol-novolac epoxy-based methacrylate. Preferred Parameters: The vinyl ester resin has a molecular weight of 500-10000.