Any tips are welcome 
It’s highly unlikely anyone will introduce you to their supplier, that’s the whole secret of the wholesale model. On social media, people giving out sourcing advice that seem like they want to help are either scammers or want to sell you something, if you want real help watch YouTube videos and get yourself helium 10 or use tactlauch, otherwise again no one will just offer you their supplier
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Search engines and trade fairs. Good luck.
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