Sping seems ordinary in life.In fact ,a lot of things in life are indispensable from it.The using of spring in life examples are:  door lock ,spring fruit knife, ballpoint pen , bicycle brake .It can be as small as pens in student's hand ,the mobile phone in our hands ,the computers of office use ,as large as bed for daliy sleeping ,the vehicles for going out ,high-speed rail,aviation and so on .Spring exists in everywhere in our life.

   For example, control mechanicalmovement, such as internal combustionengine valve spring, clutch controlspring, etc. Absorb vibration andimpact energy, such as the buffer springunder the car, train carriage, vibrationabsorption spring in the coupling, etc.Storage and output energy as power,such as clocks and springs, firearmssprings, etc. Used as force measuringelements, such as dynamometers,springs in spring scales, etc.

 Of course, this almost means that quality is a very important guarantee,high quality can improve the value and service life of products.This is our company has always  insisted on .