����ׯ����--�ṩ������������ע�ᡢ�������롢��ҵ�ʾ֡��ռ䡢��������йܡ�������վ����
QQ Mail provider
HiChina DNS services
The http-equiv attribute provides an HTTP header for the information/value of the content attribute. The http-equiv attribute can be used to simulate an HTTP response header.