Many users think the only one defect on DNA30 is that it does not have adjustable 510 pin center. And now,our cloupor are willing to meet users needs and address this issues.
     All DNA30 made by Cloupor released from October 15,2014 will have adjustable 510 pin, reverse battery protection and come with the latest upgrade system, final users can screw out the center pin to make contact with atomizer's atty by yourself, which will not appear "check atomizer" problems any more. 

Our Cloupor is also trying our best to make more improvements on all products all the time. Any ideas and suggestion for our products, please feel free to contact our, and you will also be the first one to experience our latest and original Cloupor products as soon as your suggestion was taken. Thanks.