I've sent an email to Xiaomi and asked them about this issue, this is what they respond me:
Thank you for contacting Xiaomi Customer Support and sharing the snapshots. I am Saloni and sorry to know I understand that you want the information regarding the authenticity of the Mi Haylou solar...
Hmmm, dont think so. because all over the net i saw the boxes without that YouPin logo. just found a same logo in facebook, seems he was retailer of Xiaomi
Hey Everyone
Recently i ordered and received my Haylou LS05 (Solar) . after i received the box, i figured out something has changed on the box in comparison with other boxes which i saw on the unboxing videos.
Whats your idea? is this ok?
YouPin Logo...