TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The carbonate is at least one of lithium carbonate, sodium carbonate, potassium carbonate, rubidium carbonate, magnesium carbonate, calcium carbonate, strontium carbonate, barium carbonate, zinc carbonate, lithium metasilicate, sodium metasilicate, potassium metasilicate or rubidium metasilicate. The hydroxide is lithium hydroxide, sodium hydroxide, potassium hydroxide, rubidium hydroxide, magnesium hydroxide, calcium hydroxide, strontium hydroxide, barium hydroxide, or zinc hydroxide. The oxide is lithium oxide, sodium oxide, potassium oxide, rubidium oxide, magnesium oxide, calcium oxide, strontium oxide, barium oxide, zinc oxide, silicon dioxide, aluminum oxide, or iron oxide. The electrolytic cell cathode material is nickel, platinum, titanium, ruthenium, iridium, palladium, iron, tungsten, chromium, copper, gold, graphite, stainless steel and/or its alloy material. The electrolytic cell anode material is nickel, platinum, titanium, ruthenium, iridium, palladium, iron, tungsten, chromium, copper, gold, graphite, stainless steel, or its alloy material.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The photoelectric cell is silicon solar panel, multi-bandgap solar cell, solar cell made of functional polymer material, nanocrystalline solar cell, dye-sensitized solar cells, concentrating solar cell and/or solar cell which are parallely connected. The photothermal unit utilizes Fresnel lens, reflective condenser, refractive concentrator, small trough type line focusing system, dish type system and/or tower type system, where the heating temperature is controlled by adjusting the spot size or concentration ratio. The electrolytic cell utilizes high pure corundum crucible body or high temperature resistance type reactor.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The electrolytic reaction mechanism as follows: two molecules of oxygen ion and four electrons react to form oxygen at anode; two molecules of hydroxy ion, carbonate ion and four electrons react to form carbon monoxide, hydrogen and four molecules of oxygen ion at cathode; and two molecules of hydrogen ion, carbonate ion and four electrons react to form carbon monoxide, hydrogen and two molecules of oxygen ion. The electrolytic current is 1-2 A and the electrolytic cell temperature is 600-800 degrees C.