Qingdao Sigma Chemical Co., Ltd (International, US, EU, Canada and Australia domestic

but is it just like an instant injection type thing instead of just injecting yourself with a regular needle? Every time i look into it just seems like an extra step to fill this thing and press a button when you can just stick yourself with a regular in .01 seconds. What am i missing
I got hot and heavy into the auto pens for a couple months and then realized it was taking me longer than just using insulin syringes
 
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