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24MM Screw Neck PP Caps with Center Hole
Aijiren’s screw PP cover for sample storage vial is made of high-quality polypropylene. The color is usually black and white. You can choose whether to have a cap with a center hole. A cap with a center hole will make it easier for the syringe to be in the vial. Inject the sample or withdraw the sample.
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1 pack Black PP Screw Neck Caps
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