1 Amazon ensures factory quality through a series of quality control measures.

2 First, Amazon will require sellers to submit quality inspection documents and verify the authenticity of the documents. At the same time, Amazon will conduct random quality inspections on samples submitted by sellers. If the samples fail the random inspection, Amazon will require the seller to make corrections.

3 Secondly, Amazon has established a complete after-sales service system, which also includes the seller's after-sales quality in the evaluation system. For sellers with more quality problems, Amazon will warn and punish them to ensure that consumer rights are protected.

4 In addition, Amazon also combines market supervision and seller supervision, and supervises the behavior of sellers through market supervision departments and its own seller supervision team to avoid bad merchants. Through these measures, Amazon can better ensure factory quality.