Wire communication refers to the communication equipment, the transmission needs to be connected by cable, that is, the use of overhead cables, coaxial cables, optical fiber, audio cable and other transmission medium to transmit information.
Advantages and disadvantages
Wired communication equipment is the biggest advantage of strong anti-interference, high stability, have a certain degree of confidentiality, fast transmission rate, bandwidth can be infinite; but the wired communication influenced by the environment, poor scalability, attenuation, construction difficulty, poor mobility, high cost.
Wire communication equipment
The wired communication equipment commonly used are: computer, TV, telephone, PCM, optical machine etc..
wireless communication
Wireless communication refers to the communication which does not require physical connection lines, that is, the use of electromagnetic signals can be transmitted in the free space characteristics of the exchange of information.
Advantages and disadvantages
The wireless communication device is the greatest advantage of environment, does not require the limit line, has a certain mobility, can be in the mobile state through wireless communication, low construction difficulty, low cost; but the wireless communication equipment interference is weak, the transmission rate is slow, the bandwidth is limited, there are restrictions on the transmission distance, low cost. But wireless communications are changing the technology so that the transmission rate is higher (802,11n rate can reach 100Mbps, no less than wire communication), more stable and convenient, so wireless communications equipment will be the trend of development.
Wireless communication equipment
Satellite, radio station, wireless TV (bus or subway), wireless LAN, mobile phone (mobile phone), mobile phone, GPRS, Internet access, etc.



Black anodized 6063 T5 aluminum heat sink
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Black anodized 6063 T5 aluminum heat sink



We are engaged in offering a wide range of extruded aluminium heat sinks which can be customized as per the clients requirement. There are highly acclaimed for their high efficiency & corrosion and abrasion resistance. Our range of product includes cpu cooler heat sink, led heat sink, aluminum heat sink for equipment, large heatsink for water cooling, etc.


Material 6063 T5
Finish black anodized
Machining precision cutting, drilling, tapping, riveting, black anodizing
Length 300mm
Dimension W200*H50mm
What are you doing about http://www.jiayunaluminium.com it’County Executive John R. Aluminum bleachers have been stolen; police radio towers have been targeted for their copper components; and schools under construction have been targeted for copper wiring and copper plumbing.More than a half-million people live in the county, and calls for assistance surpassed 230,000 last year. He spoke with The Examiner about Anne Arundel’s recent crime trends and how the department is working to make residents safer.

A lot of it deals with the elderly, who are very trusting and become victims of easy money-making schemes.How many of the breaking-and-entering cases did you solve last year?There were 2,998 in 2007.


We don’t have all our statistics together yet, [but] we have made 617 arrests this year for burglaries. Scrap metal has become precious. In 2007, more than 500 catalytic converters were reported stolen in the county. If we start to see emerging crime trends, we rely on citizens to be engaged in a partnership with the police department and county government to report ? through 911 or non-emergency numbers ? suspicious activity, nuisance behavior and criminal conduct.

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