Chaozhou Three-Circle (Group) Co., Ltd. engages in the research and development, manufacture, and sale of electronic basic materials, electronic components, and communication devices in China and internationally. It offers ceramic exterior parts for mobiles, ceramic covers for fingerprint modules, and ceramic parts for smart wearable devices; lead resistors and multilayer ceramic chip capacitors; ceramic ferrules, ceramic sleeves, optical fiber quick connectors, and MT ferrules and ceramic guide pin; and glass and metal encapsulation, ceramic packaging bases, ceramic wedges, capillary, and other products. The company also provides piezo micro dispensing valve systems; and alumina substrates, aluminum nitride substrates, electronic pastes, solder paste, nano-zirconia powder, metallized ceramics, ceramic structural parts, ceramic rods and substrates, and other products. Its products are used in optical communications, electronics, electrical, machinery, energy conservation and environmental protection, new energy, biological, and fashion applications. The company was founded in 1970 and is headquartered in Chaozhou, China.