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Prismatic Cell Assembly Line is used for the assembly, casing and testing of prismatic battery cells, including processes of pre-heating, hot-pressing, x-ray, bare cells matching, ultrasonic welding of tabs, busbar welding, bare cells combination, Mylar wrapping, inserting into housing and pressing, lid welding, first helium leakage test, sealing nail welding, second helium leakage test, etc.