You should use session instead if you want to hide it:
Assuming both pages are on the same domain of course.
Session["token"] = "CAACgVEYG6y4BAPpCA576tZCOVTaiStohQHcFMj8TnkYDiIBWnuQjoMSRMSjmTlZCK0JhdyWP8MYiFQELLGUMht07vKZCVLaxz7gBASydeG5PqBB9dypqvEh7tyTR1nZCRvZBITNEcnkDj00pFxNGKfi9v8U5UkVAjQlLuY08aVANUgZC9dZAi852216uCsTgpcZD#=";
Response.Redirect("http://x.elarabygroup.com/SiteLogin.aspx");
in SiteLogin.aspx, check for the token.