Shanghai Sunland Industrial Co., Ltd is the top manufacturer of Personal Protect Equipment in China, with 20 years’experience. We are the Chinese government appointed manufacturer for government power,personal protection equipment , medical instruments,construction industry, etc. All the products get the CE, ANSI and related Industry Certificates. All our safety helmets use the top-quality raw material without any recycling material.
Safety helmet in different colors

We provide exclusive customization of the products logo, using advanced printing technology and technology, not suitable for fading, solid and firm, scratch-proof and anti-smashing, and suitable for various scenes such as construction, mining, warehouse, inspection, etc. Our goal is to satisfy your needs. Demand, do your best.
Professional team work and production line which can make nice quality in short time.
We abide by the privacy policy and human rights, follow the business order, do our utmost to provide you with a fair and secure trading environment, and look forward to your customers coming to cooperate with us, openly mind and trade with customers, promote common development, and work together for a win-win situation.
The professional team provides 24 * 7 after-sales service for you, which can help you solve any problems









8/5/2020, · ,IPv4,: a brief history. Before we get into the differences between the two IP address protocols, what’s ,IPv4,? Well, an IP address is a string of numbers that is …

IPv4, is 32-Bit IP address whereas IPv6 is a 128-Bit IP address. ,IPv4, is a numeric addressing method whereas IPv6 is an alphanumeric addressing method. ,IPv4, binary bits are separated by a dot(.) whereas IPv6 binary bits are separated by a colon(:). ,IPv4, offers 12 header fields whereas IPv6 offers 8 …

Additionally, ,IPv4, is a relatively constrained network - when operating on ,IPv4,, network administrators need to figure out a way to efficiently allocate the available addresses so the system doesn ...

IPv4, - Overview - This era is said to be the era of computers. Computers have significantly changed the way we live. A computing device when connected to other computing device

IPv4, is the most widely used and familiar type of IP address, but with ,IPv4, address space running out, IPv6 is in line to replace it in the future. What Is a Subnet? During the early days of the Internet (before it was named the world-wide-web), the US Department of Defense agency developed ,IPv4, – a quad dotted decimal format to test the limits of its networking capabilities.

IPv4, vs IPv6: ,What is IPv4,? ,IPv4, is short for Internet Protocol Version 4. It's still used by the vast majority of modern internet-connected devices but was actually introduced in 1983. ,IPv4, addresses look like this example: 191.113.485.213. The key thing to know about ,IPv4, is that it's a 32-bit system.

8/5/2020, · ,IPv4,: a brief history. Before we get into the differences between the two IP address protocols, what’s ,IPv4,? Well, an IP address is a string of numbers that …

27/10/2017, · ,IPv4, (Internet Protocol Version 4) is the fourth revision of the Internet Protocol (IP) used to to identify devices on a network through an addressing system. The Internet Protocol is designed for use in interconnected systems of packet-switched computer communication networks ( see RFC:791 ).

Functionality. ,IPv4, uses a 32-bit address scheme allowing a total of 2 to the power of 32 addresses or just over 4 billion addresses.This is based on the best-effort model. The model makes sure that there is the avoidance of duplicate delivery. All these aspects are handled by the upper layer of transport.This version of IP is used as the basis of the internet, and it establishes all the rules ...

IPv4, is the most widely used and familiar type of IP address, but with ,IPv4, address space running out, IPv6 is in line to replace it in the future. What Is a Subnet? During the early days of the Internet (before it was named the world-wide-web), the US Department of Defense agency developed ,IPv4, – a quad dotted decimal format to test the limits of its networking capabilities.