1. Efficacious comburent: Adding nickel nanoparticle into the solid fuel propellant of rocket increases combustion heat, combustion efficiency and combustion stability. Conductive paste: Electronic size is widely used for wiring, packaging and connection in microelectronic industry, it plays an important role in the minimization of electronic device. The electronic paste made of nickel, copper and aluminum nanoparticle has good performance, and it helps further minimize the circuit. 2. Magnetic fluid: The magnetic fluid made of iron, cobalt, nickel and its alloy particles provide excellent properties, they are widely used in seal shock absorption, medical equipment, acoustic adjustment, optical display, etc. 3. Efficacious catallyzer: Due to its large surface and high activity, nickel nanometer has good catalyzing effect, it is applicable to organic hydrogenation reaction, tail gas processing, etc. 4. High-performance electrode: Through proper processes nickel nanoparticle can be made into electrode with huge surface, which considerably improves discharge efficiency. 5. Actuating sintering additive: As nanoparticle has large surface and superficial atom ratio, it is in high-energy state, it has good sintering ability even under low temperature; it is an efficacious sintering additive, which substantially lowers the sintering temperature of particle metallurgy products and high-temperature ceramic products. 6. The superficial conductive coating processing of metal and non-ferrous metal: Due to their high-activity surface, aluminum, copper and nickel nanoarticle can coat under oxygen-free condition below smelting point of the particles. This technology can be adopted in the manufacture of microelectronic devices. This product should be stored in dry, cool and sealing of the environment, can not be exposure to air, in addition should avoid the heavy pressure, according to ordinary goods transportation.