How to distinguish its manufacturer or brand from a single resistor, capacitor and other components?
plug-in, the resistance is generally LOGO-free, and the capacitance is better according to the LOGO, and generally only the numerical value indicates that there is no manufacturer.
patches, resistors only have numerical identification, generally there is no manufacturer's LOGO, and capacitors have no identification.
only by looking at the packaging can we be sure of the brand. There is no other way.