 确认方法：取组装后的注射器样品，逐支观察芯杆是否组装到位、有无偏歪

 Confirmation method: Take samples of the assembled syringe and observe whether the core rod is assembled in place, whether there is any distortion, and whether the rubber stopper moves during assembly. <br> Acceptable standard: The core rod should be assembled in place, without distortion, and the rubber plug should not move during assembly.

Confirmation method: take the assembled syringe sample, one by one to observe whether the core rod is assembled in place, whether there is bias deformation, assembly when the plug has no movement.<br>Acceptable standard: the core rod should be assembled in place, no bias deformation, assembly when the plug should not move.

Confirmation method: take the syringe sample after assembly, observe whether the core rod is assembled in place, whether there is deflection and deformation, and whether the rubber plug moves during assembly.<br>Acceptable standard: the core rod shall be assembled in place without deflection and deformation, and the rubber plug shall not move during assembly.<br>