The power supply should be cut off when signal jammer

The power supply should be cut off when signal jammer is not used.
Resources in the system of domestic and foreign manufacturers asymmetric conditions, the domestic mobile phone manufacturers embarked on extensive, type the path of development alone, the role of each manufacturer is no depth or unrelated links on the chain a part. At this stage, the domestic mobile phone manufacturers the initial training with the system resources of Chinese mobile phone industry clusters forming the seed companies, but also the initial establishment of the domestic manufacturers and foreign, especially Taiwanese foundry relationship between initial market transactions. China's mobile phone industry cluster in the embryonic stage, all aspects of the mobile phone industry chain showed scattered, point-like features, not yet established its complete industrial chain, and Taiwan OEM manufacturers do not establish a strategic partnership between or industry alliances. one at the downstream of integrated services (mobile advertising, service and other industries), brand, and the middle reaches of the manufacturing is added region with the lowest value, competitiveness relative minimum. China's mobile phone exports still rely mainly on the strength of foreign-invested enterprises, foreign-invested enterprises in the country's total exports to total exports of 94.2%, of which six companies annual export volume exceeds 10 million. Mobile phone industry exports shown in Figure 18. The effective covering range of the shielding signal of signal jammer is dependent on distance of surrounding base station.
In many countries, multinational companies led the formation of clusters in the region to implement preferential policies to attract foreign direct investment is closely related. One is to attract foreign investment can make up for the national or regional shortage of funds for economic development, especially in developing countries; Second, the logic that multinational companies are technology spillover can help local technological capability, management and operation capabilities and productivity the increase. The effective shielding range of signal jammer should be used to the largest extent.  Generate technology spillovers and local businesses in the existence of multinational production on the link (backward link) or the horizontal R & D cooperation is substantial production activities is considered to be technology externalities generated. Such as Ireland's electronic information and communication technology industry cluster is the formation of local government by attracting FDI, and vigorously promote economic development in Ireland, but also by multinationals and local companies to join the post, link and forward link level, the cluster to become foreign the transfer of advanced technology from multinational corporations to local businesses an important channel.