Recently,there are some cloupor cloutank series clones are also selling in the market. Avoiding users to buy the fake cloutank products, our company also applies for patent certificate with related organization in the same time. And it is a pleasure that our company successfully got the patent approved certificate some days ago. Please users choose to buy original cloupor products so that you can get the best after sales support from cloupor.
How to distinguish whether the cloupor products you bought is original or not,you can try to do it as the following steps. 
1) Find the cloutank series outer package, and scratch and check the security code (16 numbers).
2) Enter this 16 numbers to the follow form,it will give you tips about that the cloutank you got is original or not.

Thanks for every user's support and advice again!