What is the newest vital injector?

According different mesogun, we only discuss about the Eungsung vital injector

Crystal gun witout vacuum so mostly we dont recommend customers to use.

The 1st vital injector widly use those days, with vacuum technique to save dose

And in 2015, the 2nd vital injector coming out being the newest model. Work more smoother, 

at the same time add filter to avoid dirty access machine.

Wasted dose after injecting back to filter, then back to needle again. Very dose saving.

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