Hello, how are you? So sorry for the dirty label on the transparent plate.
We feel quite sorry on your bad purchasing experience and we will be more strictly quality control on the manufacturing.
Here I have some solutions if you may like, or you can share me your other suggestions.
1. return back to your seller; That will take you some more time to get back the money.
2. if it is not effected to your usage, could we offer you a cooling fan as our apology.
3. We will ensure the better quality control on next manufacturing to offer the best purchasing experience to our users.
the philosophy of open source considers issues in terms of how to make software and product “better”—not only a practical sense but also a reality.