Yes they are made in China just like everything else these days. I spent the extra few bucks to be sure and get Porsche's quality control insurance.
I can't tell the difference in weight so they seem to be the same construction internally where it counts on a relay. Hopefully the contacts are still of a high quality, time will tell. My originals in the car are from Wherle, the red color is a bit darker on the original German made ones.
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