The installation method of signal jammer

The DC-DC converter input voltage is used for signal jammer
Three major regional mobile phone joint development of industrial clusters, and present to the central and western regions to expand the space situation. Global mobile phone industry value chain based on location choice, the Chinese mobile phone industry concentration further enhance the area, and has formed three regional mobile industry clusters: Tianjin, Beijing and other areas of manufacturing enterprises based mobile phone industry, the Bohai Rim Region cluster, accounted for 40.7% of the national total; to Shenzhen, Dongguan and other regions as the main producers of the Pearl River Delta mobile phone industry clusters, accounting for 27.8% of the national total; to Hangzhou, Shanghai, Suzhou and other regions of the Yangtze River as the main producers Triangle region, accounting for 25.6% of the national total. Three regions of the national total mobile phone production accounts for about 95%. The installation method of signal jammer is easy in construction.
In 2006, China mobile phone manufacturers a total of about 253, distributed throughout the country 21 provinces, mainly concentrated in Guangdong, Zhejiang, Jiangsu, Beijing, Tianjin, Fujian and other provinces, the proportion of their share of the country were 28.9%, 13.8%, 13.0%, 9.1%, 7.1% and 7.1%, the cumulative proportion reached 79.0% (Figure 19). Chinese mobile phone production license has reached 79 companies, located in three regions of the total number of manufacturing enterprises accounted for 92.68%. Chinese mobile phone industry cluster spatial distribution shown in Figure 20. Presented to the "three mobile phone industry cluster with" R & D, design, procurement, sales base, the value of production to low-end part of the gradual western trend of the central region of space to expand. All signal jammer are installed indoors.
"Star network" model of industrial clusters: global procurement centers. Bohai Rim region phone industry clusters, and gradually formed Beijing R & D, design center, as the manufacturing base in Tianjin, the large foreign multinational companies as the core of the brand-oriented mobile phone industry cluster. The so-called clustering is a leading multinational companies in the cluster formation and development process, the entire production value chain leading multinational companies in all aspects.