TECHNOLOGY FOCUS - CERAMICS AND GLASS - Preferred Composition: Inorganic binder is inorganic glass powder containing main component including lead oxide and/or bismuth trioxide, and additive component including Boron trioxide, silicon dioxide, zinc oxide, antimony trioxide, barium oxide, titanium dioxide, aluminum oxide, magnesium oxide and/or calcium oxide.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: Electroconductive carbon includes carbon nanotubes and/or graphene. The carbon nanotubes include single-walled carbon nanotubes, double-walled carbon nanotubes and/or multi-walled carbon nanotubes, preferably multi-walled carbon nanotubes having outer diameter of 8-60 nm, length of 5-50 mu m and specific surface area of 100-300 m2/g. Graphene is chosen from single layer graphene, double layer graphene and/or multi-layer graphene, preferably multi-layer graphene having thickness of 2-20 nm, diameter of 0.5-20 mu m and specific surface area of 50-300 m2/g. Electroconductive metal powder is silver powder, aluminum powder and/or silver powder, preferably silver powder. The content of inorganic binder contained with respect to 100 pts. wt. silver powder is 4-8 pts. wt., 5-10 pts. wt. or 1-5 pts. wt. The content of and electroconductive carbon contained with respect to 100 pts. wt. silver powder is 55-65 pts. wt., 10-15 pts. wt., 50-60 pts. wt. or 30-35 pts. wt.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: Alternately, the electroconductive paste comprises electroconductive metal powder, inorganic binder and electroconductive carbon, in which the content of inorganic binder and electroconductive carbon contained with respect to 100 pts. wt. electroconductive metal powder is 1-10 pts. wt. and 10-65 pts. wt., respectively, or comprises organic carrier and electroconductive carbon, in which the content of electroconductive carbon contained with respect to 100 pts. wt. organic carrier is 0.5-7 pts. wt., or comprises organic carrier, electroconductive carbon and dispersant, in which the content of electroconductive carbon and dispersant contained with respect to 100 pts. wt. organic carrier is 0.5-7 pts. wt. and 0.1-3 pts. wt., respectively. Organic carrier includes organic solvent, organic binder and additive. Organic solvent is chosen from terpineol, dibutyl phthalate, butyl carbitol, turpentine oil, glycol ether, carbitol acetate, ethylene glycol ether acetate, tributyl citrate and tributyl phosphate. The content of organic binder and additive contained with respect to 100 pts. wt. organic solvent is 2-15 pts. wt. and 0.1-5 pts. wt., respectively. The mass ratio of electroconductive carbon dispersoid and organic binder dispersion during preparation of electroconductive paste is 1:0.5-1.5.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The dispersant is chosen from polyvinylpyrrolidone, polyacrylamide, cellulose derivative, ethylhexyl phosphoric acid and sodium dodecylsulfate. Organic binder is chosen from ethyl cellulose, butyl cellulose, alkyd resin, epoxy resin and phenolic resin. Additive is chosen from modified hydrogenated castor oil, polyamide powder, cetyl alcohol and stearyl alcohol.