Product Description：
- The use is very convenient, just pull back the plunger after injection, it can protect the needle tip
- Special design can prevent the hypodermic needle back into the barrel occasionally
- After pulling back the plunger, the hypodermic needle will be locked in the barrel and will not be pushed out occasionally
- It has the function to prevent advanced self- destruction, the product can not be used again after the injection
- With BEIPU's needle tip with high quality and high output
- Luer lock design can match with all kinds of needles
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