TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The airtight container is a screw-type airtight container having open-pore rate of less than 20%, and is made of graphite. The residual hydrogen amount of calcined material is 6500 ppm or more. The flaky graphite crystal consists of multilayer graphene having thickness of less than 10 nm. Preferred Process: The hot hydrostatic pressure pressurizing process involves surrounding one portion or all of the granular material of calcined organic compound with spacer and sleeve made of glassy carbon, diamond-like carbon and amorphous carbon. The process further involves mixing carbon materials chosen from carbon fiber, natural graphite, artificial graphite, glassy carbon and amorphous carbon with calcined material. Preferred Properties: The silicon powder has particle diameter of less than 500 mu m.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The organic compound is starch, cellulose, protein, collagen, alginic acid, dammar, Kovar (RTM: nickel-cobalt ferrous alloy), rosin, gutta-percha, natural rubber, cellulose resin, cellulose acetate, cellulose nitrate, petite-shaped cellulose-acetate, casein plastic, soybean plastic, phenol resin, urea resin, melamine resin, benzoguanamine resin, epoxy resin, diallyl phthalate resin, unsaturated polyester resin, bisphenol-A epoxy resin, novolak-type epoxy resin, polyfunctional group epoxy resin, alicyclic epoxy resin, alkyd resin, urethane resin, polyester resin, vinyl chloride resin, polyethylene, polypropylene, polystyrene, polyisoprene, butadiene, nylon, Vinylon (RTM: polyvinyl alcohol fiber), acrylic fiber, rayon, polyvinyl acetate, acrylonitrile-butadiene-styrene resin, acrylonitrile styrene resin, acrylic resin, polyacetal, polyimide, polycarbonate, modified polyphenylene ether, polyallylate, polysulfone, polyphenylene sulfide, polyetheretherketone, fluororesin, polyamidoimide, silicone resin, petroleum-based pitch, carbonaceous pitch, petroleum coke, coal coke, carbon black, activated carbon, waste plastic, waste polyethylene terephthalate bottle, scrap wood, waste plant and organic refuse, preferably phenol resin having average particle diameter of 100 mu m or less.