Safety Characteristics: after absorbing the expected dose of liquid medicine, if transporation is needed, push up the sliding-sleeve to protect the needle tip from physical damage during transportation, pull the sliding sleeve the expose the needle tip beofre the injection starts,when the expected dose of liquid medicine is 100% injected ,manually side the sliding sleeve to the position where the connector base can no longer side, the needle tip is completely covered in the sliding sleeve, and then the sliding sleeve is manually rotated until it is locked, it could effectively preventing repeated use and accidental needle sticking, and avoiding cross infection. To prevent the spread of diseases such as hepatitis B and AIDS, reduces the risk of medical staff occupational exposure, improved the clinical injection safety. Disposable Insulin Syringe Structure properties of products A The integrated design of the needle holder and barrel injection molding which ensures the low residue of the liquid and ensures the accuracy of the injection of liquid. B Small tip configuration which could reduces the patients' pain. C Firm adhesion of the ink of scale, friction resistance, not easy to fall off. D Excellent sliding performance, convenient for clinical injection of medical staff. E Good usability design: The barrel is transparent and can clearly observe the liquid and bubbles. The plunger has a non-slip structure and is easy to be hold , anti-slip structure of the inner chamber of the back end of the barrel, which can prevent the plunger from accidentally slipping out of the barrel the color of the cap distinguishes insulin strength(U-100,U-40), so that it is easy to indentify and use.