Medical Mixed Colour Rubber Stopper For Blood Collection TubeKANGLONG is the company with the largest color rubber stopperproduct line in China. Our color rubber stopper has rich colorsand can be customized according to your needsGood formulation technology guarantees excellent leakage of butylrubber stopper，Leakage <20mgUltra-low metal dissolution, can be used for human blood metaldetectionSpecial surface treatment technology eliminates the effects ofsilicon treatments on blood products .The most stringent process control ensures the cleanliness of therubber stopper .Suitable acupuncture resistance，Can withstand 60000 times ofacupuncture abrasionExcellent γ-ray resistance