1 appearance: integration, smooth, beautiful, conducive to stability Tip ejection. 

2 structure: the tip rail linear catapults and avoid Tip ejection, curved, curved, rotating pop up and cause severe pain. 

3, spring: patented design. Buffer into the skin effect, to retract, and reduces pain. 

4, arc special triangular-shaped design, makes the pain faster healing of small wounds, and to help ensure the amount of bleeding. 

5, a spring material particularity, overcomes the spring pressure for a long time or unable to eject does not eject problem in the world. Avoiding the needle tip piercing pain resulting from too deep or too shallow or no bleeding