How to Use Disposable Plastic Syringe
Usage of disposable plastic syringe: first tear the package bag, take out the syringe inside, then remove the protective cover of the injection needle, pull the core rod back and forth to East China, tighten the injection needle, and then draw the liquid into the syringe, the injection needle upward, slowly push the core rod upward to exhaust air, and then conduct subcutaneous or intramuscular injection. …
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