This is an authentic Grandstream product selling page.
The products delivered to the buyer have been given a PSE mark on the AC adapter along with the agents name as proof of handling an authorized agent in Japan on the assumption of being sold in Japan.
Grandstream products are from 2017
Items shipped from overseas.
The AC adapter has "Daiwa Technical Co., Ltd." written on the "None".
All items applicable to any of the above are parallel import goods, and shops handling them are parallel importer that violate the Amazon Selling Terms that sell fake products.
It is also difficult or impossible to receive a 1 year manufacturers **due to its non-genuine product.
Please be careful not to purchase from such sellers, and in the event that the AC adapter is included with your purchase.
If you are in violation of the Electrical Appliance Safety Act without PSE mark, please contact Amazon Customer Support.