legal ground
Article 57 of the Trademark Law
Any of the following acts is an infringement of the exclusive right to use a registered trademark:
(1) Using the same trademark as its registered trademark on the same commodity without the permission of the trademark registrant;
(2) Without the permission of the trademark registrant, using a trademark similar to its registered trademark on the same kind of goods, or using a trademark identical with or similar to its registered trademark on similar goods is likely to cause confusion.