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I bought some of these blades in the red packet as I have a Gillette Goal tech razor. They shaved okay for me. I got my usual week of shaves out of the blade. I don’t believe that they are fakes but that is only my opinion.
The green ones are made in India and are discontinued. The red ones are made in Shangai for the Indonesian market. Since there are many Super Thin fakes that are made in China, it might be your red ones are fakes too.