Reusable insulin pen 
1.Material: special European imported environmental protection plastic. 
2.High precision injection molding screw; Stable injection; Accuracy error is only 3% 
3.Dosage adjustable from 1-60U. Min. dosage 1U. 
4.one-direction dose adjustment to ensure safety. Device reset automatically and self locking while injection finishes. 
5. suitable for both injection needles and injection pens, easy to replace. 
6. suitable for 3 ml card bottle potting medicine liquid injection 
7. can be used 100 times at least, easy to operate. 
8. suitable for insulin injection 
9. cheap factory price, OEM service is available