Multi-Layer Circuit boards. In order to increase the area that can be wired, the multilayer board uses more single or double-sided wiring boards. Using a double-sided inner layer and two single-sided outer layers, the printed circuit board which is alternately arranged by the positioning system and the insulating bonding material and the conductive pattern is interconnected according to design requirements becomes four layers, similiar stack up for 6 layer, 8 layers etc. The layers are more than two called multiple layers printed circuit board. The number of layers of the board does not mean that there are several layers of independent wiring layers. In special cases, empty layers are added to control the thickness of the board. Usually the number of layers is even and the outermost two layers are included. Multilayer Pcb,Multilayer Printed Pcb,Multilayer Printed Circuit Board ,Multi-Layer Circuit Board Chuangying Electronics Co.,Ltd , https://www.cwpcb.com
The important reason for the collective dive of concept stocks yesterday was undoubtedly the new Apple products that were eclipsed. The downtrend of the Growth Enterprise Market also made the Apple concept a target of sell-off. As of yesterday's close, Changxin Technology, Huanxu Electronics, Desai Battery, Goerre Acoustics, Anjie Technology, Xinwei Communications and other stocks fell to the limit, Borui's communications also fell 7.73%.
Apple announced the release information of the new iPhone early yesterday morning. China first appeared on the list of Apple product launch regions. According to Apple's official website update price display, the licensed iPhone5c/5s sells for 4,488 yuan and 5,688 yuan respectively.
Apple's two products released this time almost no bright spots again, while the price is not competitive, Apple's concept then appeared a large area of ​​the limit. Based on the after-hours data, the concept stocks were sold by institutions and the amount sold was as high as 10 million yuan.
According to Guo Shiliang, an investment strategy analyst at Yongzhu, the cumulative increase in the amount of such products in the previous period was relatively large, and the new products made the market disappointing. As a result, the concept variety lost its support and the stock price crashed. In addition, the GEM is also facing adjustments. The concept of Apple in the outlook market may still have a high level of turbulence. For some of the varieties with too much growth, we should adopt a gradual exit strategy.