South Korea already has the fastest broadband in the world. Now the country is gradually becoming faster. SK Broadband, one of the nation's largest Internet service providers, announced last week that it plans to launch a 10 Gbit/s service. This speed to download HD quality movie probably only takes 7 seconds. The SK Broadband confirms its position as Korea’s broadband technology leader. According to reports, Koreans currently enjoy 24.6 megabits per second, which is more than twice the average connection speed of Americans.
Earlier this year, the Korean government pledged funds to help establish a 5G wireless network in 2020, and Samsung has demonstrated that the technology is a 1 Gigabit per second wireless connection. The most well-known Gigabit Internet service in the United States comes from Google Fiber, but this is only used in three cities. Some local Internet service providers have also launched ultra-high-speed fiber services, but they are limited to sparsely populated areas and small cities. Comcast recently pointed out that Americans do not need Gigabit networks at all. Time Warner Cable also denied the need for faster speeds.
Silicon Nitride Ceramic Standard Parts
Silicon nitride is an important structural ceramic material. It is a superhard substance that is inherently lubricious and resistant to wear and is an atomic crystal; it is resistant to oxidation at high temperatures. Moreover, it can resist cold and hot shock, and is heated to above 1000 ° C in the air, and is rapidly cooled and then heated rapidly without breaking. It is precisely because of the excellent properties of Silicon Nitride Ceramics that it is often used to manufacture mechanical components such as bearings, gas turbine blades, mechanical seal rings, and permanent molds. If a silicon nitride ceramic that is resistant to high temperatures and does not easily transfer heat is used to manufacture the heating surface of the engine component, not only the quality of the diesel engine can be improved, fuel is saved, but also thermal efficiency can be improved.
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