1. If your "X" is successfully registered in electrical appliances, it is not infringement.
2. If you have not registered successfully and Xtep Company has not registered the "X" trademark on the electrical appliance, then it is not an infringement.
3. If you are not registered successfully, and Xtep Company is registered, then you are infringing. The exclusive right of a trademark. Yours is a counterfeit product