The new multi-functional composite current collector aluminum film (MA) and the new multi-functional composite current collector copper film (MC) are subversive products in the new energy industry, which is a composite material that can completely solve the safety defects of new energy lithium battery which is easy to explode and catch fire, significantly improve the energy density of lithium battery, reduce the weight of battery, increase the endurance capacity, and have lower cost and better physical properties and process properties. At present, Jimat's composite current collector material products have been commercialized and entered the mass production stage. The composite current collector is a key platform technology for the next generation of higher performance new energy batteries, which plays a decisive role in the future technical route of the new energy battery industry.