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Tag #QC3.0

Difference between QC2.0 3.0 4.0

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QC2.0 3.0 4.0 are high-frequency words that appear in our mobile phone accessories industry, but there are still many customers who don't know their concepts and differences very well. Today, I will systematically share with you what is QC4.0, what is the difference between different QC versions?