TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The composite substrate further comprises electrically conductive filler (0.01-10 wt.%) that is dispersed in the cured vinyl ester resin, and a metallic net being embedded in a molded bulk molding compound material.. The graphite powder comprises powder (less than 10 wt.%) having size larger than 40 mesh, and powder (balance) having a size of 40-80 mesh. The electrically conductive filler is carbon fiber, carbon black, metal plated carbon fiber, metal plated carbon black, carbon nanotube (CNT) and/or modified CNT, preferably CNT modified with polyether amine or acyl chlorination-amidization reaction and having a diameter of 1-50 nm, length of 1-25 mu m, specific surface area of 150-250 m2/g and aspect ratio of 20-2500 m2/g. The composite substrate is prepared by mixing vinyl ester and graphite powder; adding (wt.%) polyether amine dispersant, free radical initiator (1-10), a mold releasing agent (1-10), a low shrinking agent (5-20), a tackifier (1-10), and a solvent (10-35); compounding the mixture; disposing a metallic net in a mold; and molding the material at 80-200 degrees C and pressure of 500-4000 psi to form a composite substrate. The tackifier is alkaline earth metal oxides, alkaline earth metal hydroxides, carbodiamides, aziridines, and/or polyisocyanates, preferably calcium oxide or magnesium oxide. The metallic net is made of aluminum, titanium, iron, copper, nickel, zinc, gold, or their alloy; and has a thickness of 0.01-3 mm, a mesh of 0.1-15 mm, and strings having a diameter of 0.01-3.0 mm.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The cured vinyl ester resin further comprises polyether amine dispersant (0.01-10 wt.%). The polyether amine is polyether diamine having two terminal amino groups, and having a weight-averaged molecular weight of 200-4000, preferably poly(propylene glycol)-bis(2-aminopropyl ether) or poly(butylene glycol)-bis-(2-aminobutyl ether). The free radical initiator is a peroxide, hydroperoxide, azonitrile, redox systems, persulfates or perbenzoates, preferably t-butyl peroxybenzoate. The mold releasing agent is metal stearate (preferably) or wax.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The solvent is styrene monomer (preferably), alpha -methyl styrene monomer, chlorostyrene monomer, vinyl toluene monomer, divinyl toluene monomer, diallylphthalate monomer, or methyl methacrylate monomer. 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, preferably 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 or phenol-novolac epoxy-based methacrylate (preferably); and having a molecular weight of 500-10000.