Electronic components includes active components and passive components. Electronic components include: Integrated Circuit, resistors, capacitors, inductors, potentiometers, electronic tubes, heat sinks, electromechanical components, connectors, semiconductor discrete devices, electroacoustic devices, laser devices, electronic display devices, optoelectronic devices, sensors, power supplies, switches, micro motors, electronic transformers, relays, printed circuit boards, integrated circuits, various circuits, piezoelectric, crystal, quartz, ceramic magnetic materials, printed circuit substrate substrates, electronic functional process materials, electronic adhesive (tape) products, electronic chemical materials and components, etc. Electronic components have international certifications such as CE certification from the European Union, UL certification from the United States, VDE and TUV certification from Germany, and CQC certification from China to ensure their quality.