relocate - to where exactly?

There are two major manufacturing hubs in the world - east Asia and central Europe. Labor costs in manufacturing around the world have equalized to start at around $12/h. Slightly more in automotive. Average wage (whole economy) in Guangdong is ~$10/h. Labor cost in Poland is ~$13/h. The days of labor cost arbitrage are over

One can find cheaper labor, but it's always at the cost of worse infrastructure, missing supply chains or increased shipping costs. This is not pharma or silicon, where value per kilogram makes the cost of shipping is negligible. Manufacturing and assembly of heavy items like cars, trains or construction materials is nearly always near-shored