In addition, the dirt adhering to the surface and sunken of rubber stopper has some conglutination;it is not easy to clean away by dipping in cleaning liquid.

 
  • 另外,粘附在胶塞表面和脐眼深处的脏物均具有一定的粘附强度,不易在清洗液中一泡就能自动被剥离清除掉。
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