Winter Health: Health and anti-aging, away from these foods

You should be careful with the following 6 kinds of foods that love beauty. Don't eat as much as you want. If you want to look young and beautiful forever, you can't eat more. 1. Lead-containing food lead can significantly reduce the levels of potassium-adrenalin, dopamine and serotonin in the brain, causing neurological block, causing memory loss,

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 Control Board,Impedance Controlled PCB,Gold Fingers PCB,Impedance Control PCB

Storm Circuit Technology Ltd , http://www.stormpcb.com