We don't need the raw material extraction and that's why I didn't mention it in my comment. Raw material extraction doesn't happen in Shenzhen and for some mate

We don't need the raw material extraction and that's why I didn't mention it in my comment. Raw material extraction doesn't happen in Shenzhen and for some materials it doesn't even happen in China. You can get a shipload of cheap sodium sent wherever you are. All you need is a few companies to store a bit so it's readily available. None of the things I listed have to have a large environmental impact. We have huge warehouses and same-day logistics in the US, they're just for consumer goods. Making PCBs or coating electrodes or working metal can all be very low-impact processes. Shenzhen isn't Bhutan but it certainly isn't a chemical waste pit. Most Chinese pollution comes from coal or resource extraction, not manufacturing.