Hi Soufian,
Do the shoes need to be in Nike brand? Nike shoes are sold only through their authorized dealers and licensed retail stores to stop the distribution of fakes / imitations. They may also be available through liquidations, and here's one that may have Nike shoes -
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There are several manufacturers and liquidators for shoes listed at SaleHoo, but they are not based in China :
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I also tried looking through China based suppliers but none of them manufactures shoes.
Let us know if you need further help.