Statistical Analysis of China's Communication Cable Production from January to November 2011
Judging from the output of all provinces and cities, in the first 11 months of 2011, the output of Jiangsu's telecommunications and electronic network cables reached 19.04 million kilometer, a year-on-year decrease of 6.98%, accounting for 38.42% of the country's total output. Followed by Zhejiang, Guangdong and Liaoning provinces and cities.
Control impedance PCB
Many customers asked us what information we need for impedence control PCB.Here,there are two types for PCB manufacturer,a is single impedance ,just one trace ,two holes .and b is differential impedance,it always go with 1 pair (two trace with same width and space). For single impedance,you just tell us the trace width one which layer and what value you require .For differential impedance,trace width/space,layers and value. Our experience engineers will calculate following your instruction with Polar software.We may change trace width/space or stackup ,but please do not worry, if any changes,we will send you to approve before proceeding. Generally,the tolerance is 10%,and more accurate is 8% .All impedance boards ,we will test here and report.
Impedance Control Board,Impedance Controlled PCB,Gold Fingers PCB,Impedance Control PCB
Storm Circuit Technology Ltd , http://www.stormpcb.com