1.Pure copper plated, gold tentacles. 2.Small size, gold plated needle core, anti-corrosion material. 3. Convenient, quick and durable.1.Medical industry: medical equipment, beauty equipment, hearing AIDS, blood pressure monitors, heart rate monitors, handheld electrocardiograph, etc.  2. Intelligent devices: intelligent robots, sensors, handheld devices, drones, vehicle equipment, etc   3.Smart wearable products: smart watch, smart bracelet, smart glasses, Bluetooth headset, smart gloves, VR, etc   4.3C Consumer products: tablets, electronic locks, electric cars, smart water cups. Mobile phone. Charging data cable, etc.