cell phone jammer is managed by the related unit

cell phone jammer  is managed by the related unit.
Therefore, in practical applications, when the requirements of the penetration depth larger negative defocus; welding thin material, it is appropriate defocus. The laser welding can successfully connection to the wire with massive components, the massive size of the components can be any. Welding should be noted that the geometry of the filamentous components. Welding of different metals. Welding different types of metal to solve weldability and welding parameter range. Laser welding between different materials, only certain combinations of materials possible. Laser welding characteristics. Laser welding has the following main advantages: speed, aspect ratio, and small deformation. Laser focus, high power density welding, aspect ratios up to 5:1 up to 12:1. 
Economic relations in the United States and Japan is much better than in Germany (the main reason is led by Germany, the EU has numerous relations with the U.S. contradictions), German exports to the United States encountered barriers to trade than Japan, but the policy of preferential treatment enjoyed by local production and management cooperation less, is not conducive to market development; and American culture, the pursuit of "big" GM's Buick and Ford models are characterized by generous body size, for a long time the Americans have already formed the habit and culture like the "big" cars (the Americans car intrinsic properties of the pursuit is not), but generally the same price of the European car size is small, the Americans do not accept the contrary, Japanese cars have always been the pursuit of the design features of the surface appearance of the atmosphere, is to cater to the American culture.