Electronic components include: resistors, capacitors, inductors, potentiometers, electronic tubes, radiators, electromechanical components, connectors, semiconductor discrete devices, electroacoustic devices, laser devices, electronic display devices, optoelectronic devices, sensors, power supplies, switches, micro Special motors, electronic transformers, relays, printed circuit boards, integrated circuits, various circuits, piezoelectric, crystals, quartz, ceramic magnetic materials, base substrates for printed circuits, special materials for electronic functional processes, electronic glue (tape) products , Electronic chemical materials and parts, etc.