I bought a 128GB ShanDian SD card and ran H2Testw in Windows 10 and F3 (Fight Flash Fraud) in Linux and both tests stated the card was bad, fake, or corrupt. Completely unusable
The seller provided Aliexpress with a certificate of authenticity stating the card could not possibly be fake...I can make a certificate up in Photoshop in about 10 minutes too.
Aliexpress refused to give me a refund even though I uploaded screenshots of the errors from H2Testw and F3.
So now I am running a 6.5 hour H2Testw live and real time with a camera on the card/card reader to prove the SD card is faulty.