Auto disable syringe for immunization (fixed needle)

FEATURE
Specification: 0.05ml, 0.5ml and 1ml 
Material:Made of medical grade pp
Certificate: FDA, WHO PQS, CE, ISO13485 certificate
Package:Blister package
Scale:Fixed-does
Needle:Fixed needle
Sterile:By EO gas

ADVANTAGE
After injection, the needle will retract into barrel to avoid reuse and prevent  patient and doctors being stabbed by needle.

OPERATION
a. Fix the needle and then take off protective cap
b. Suck liquid
c. vent  the air
d. Begin to inject  to zero line after  enter into body
e. Pull out syringe from body and the needle will be retracted into the barrel
f. Break out the plunger and then the syringe reach safety destroy.