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[Knowledge] The cultures of various countries that foreign trade people must know
1. The way of thinking about cultural differences in foreign trade marketing The Anglo-American thinking mode is characterized by deductive reasoning in a linear sequence, while the Chinese are more intuitive, intuitive, and use imagery thinking. In cross-cultural language communication, this differ
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[Knowledge] Does the decoration need pre-buried network cables or optical fibers?
fiber to the home"The current network uses optical fiber", this sentence is correct, but it is only fiber to the home. Fibers have lower losses when transmitting signals over long distances. From the optical cat in our house to the operator's control room, all network signals are transmitted by opti
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[Knowledge] ROHS certification introduction
What is ROHS certification? RoHS certification is also called environmental protection certification, which is in line with European and American standards. It is the English abbreviation of The import of harmful heavy metals such as cadmium Cd, mercury Hg, hexavalent chromium Cr6+, polybrominated d
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[Knowledge] Do you know the difference between EPON and GPON?
A PON is introduced1. What is PONPON (passive optical network) technology (including EPON and GPON) is the development of FTTx (fiber to the home) main implementation techniques, it can save the backbone fiber resources and network level, under the condition of long distance transmission can provide
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[Knowledge] What is the difference between single-mode fiber and multi-mode fiber?
Fiber optics are flexible, transparent fibers made of extruded glass or plastic, slightly thicker than a human hair. Optical fiber is the most common means of transmitting light at both ends and is widely used in optical fiber communication. Optical fiber has a longer transmission distance and hig
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[Knowledge] Difference between network TV and HD set top box
There are three types of set-top boxes: 1) one is a traditional set-top box operated by various radio and television operators (Beijing Gehua, Hangzhou Huashu, etc.); 2) the other is operated by telecom operators or other third parties; 3) The recently popular network TV set-top box, similar to Tele
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[Knowledge] Do you know the inspection and cleaning method of fiber end face?
In network maintenance, it is found that the cleanliness of the optical fiber end face is a very important factor in order to make the optical fiber jumper and the optical fiber coupler well connected, which directly affects the communication quality of the optical network. At present, in the daily
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[Knowledge] Don't use the optical modem as a router anymore, the difference between the two is quite big!
Many people have seen the modem, and many people have only one modem at home, because some modem has its own routing function, they use the modem as a wireless router, but this greatly reduces the wireless network at home, you can't. Enjoy the good internet speed you deserve. Next, let's talk abo
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[Knowledge] How to judge the quality of the cabinet?
With the development of computer and network technology, IT facilities such as servers and network communication equipment in data centers are developing in the direction of miniaturization, networking, and racking, which has brought new changes to the construction model of data centers. , and the c
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[Knowledge] What kinds of connection means does patch panel have? How to connect patch panel and switch?
Distribution frame is mainly used in office end of front-end information point modular management equipment, is a very important component in the integrated wiring management subsystem, if the lack of integrated wiring distribution frame, the front-end information point will direct access to the swi
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