Amazon CloudFront is a content delivery web service. It integrates with other Amazon Web Services to give developers and businesses an easy way to distribute content to end users with low latency, high data transfer speeds, and no commitments.
nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.
HiChina DNS services
The DOCTYPE is a required preamble for HTML5 websites.
Websites using https protocol.
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.
These websites are related to szzc.com in terms of content, traffic and structure