Regarding below issued, Then Our engineers went in and fixed some of problem ,such as fluid dripping and kindly please see actions in above attached.
However for material have sucks back to dispenser and Sigma function control that it’s concerning with your adapter assembly head of adapter tube,Thus we will be provide adapter tube that adapter head it’s compatible with EFD 5 CC syringe.
For these parts will ETD to DOUYEE Singapore on next week and we will try to ship out to DOUYEE BKK as soon as possible.