MLCC (Multilayer Ceramic Capacitors) acts as a "dam" for quantitative transmission of electricity after electricity storage, and adjusts the current to transmit quantitatively in the circuit to prevent electromagnetic interference between components. The thickness is 0.3mm, which is only 1/250 of a grain of rice. In such a thin thickness, only as thin a multi-layer stack as possible can it store more electricity, so this is a very important part of technical capabilities.