1. The supplier bears the responsibility.

2. Because according to temu's refund policy, if there are product quality problems or supplier delivery errors, the refund responsibility should be borne by the supplier. Suppliers should ensure quality and accuracy when providing goods or services, and should bear corresponding responsibilities if problems occur.

3. In addition, according to the Consumer Protection Law and other relevant laws and regulations, consumers have the right to refund when purchasing goods or services. Therefore, temu refunds are borne by suppliers to protect the legitimate rights and interests of consumers.