1. First of all, you should bear the legal responsibility, because consumers do not know who produces this product, they only know that you are the owner of this trademark and the legal "producer";
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2. My understanding of the problem you mentioned is that you have an OEM. After the OEM produces the products, you sell them as OEMs. This phenomenon is very common now; for example, Apple is OEMed by Foxconn. ;
3. When you package the product to this foundry, you must have strict quality requirements and stipulate how to recover compensation if damage occurs; if there is no agreement, it may be difficult for you to ask for this. He compensates you for your losses;