Spring common sense: what kind of spring?

        Spring is a common part, is a kind of energy storage parts, can be used for shock absorption, clamping, energy storage and measurement, etc..
        Time compression spring, tension spring, torsion spring, plane scroll spring.
        Some spring products applicable to all types of toys, lighting, handbags, leather goods, bags, gifts, crafts, stationery, electronics, electrical appliances, cameras, precision equipment, all kinds of traffic tools, hardware and plastic, electronics, machine, bicycle, baby stroller, washing machine, remote control cars, vacuum cleaners, lamps, furniture, toys, switch, socket, water heater, calculators, watches, ignition, mouse, motor, mobile phone, medals, fan, video DVD.