In this paper, we forth universal quantum theories in science and technology, relevant to mechanics and dynamical systems of multi-body grand canonical bodies. The quantum theories are generalizable to millions to billions of interactive bodies of different properties, interactions and science and technological applications from quantum computing, Q-LEDs, Q-heat transfer, Q-hydrodynamics, Q-EHMD, spintronics, Q-engineering and measurement with the theory laid here for quantum science and technology.