good
According to the production process of the chip, the original factory will package the tested Flash Die and mark it with its own logo, which is the original factory particle, which is simply a high-quality particle carefully selected. And did not pass the detection is degraded particles, because in the chip production process inevitably have unqualified particles, and from these unqualified particles can also be screened to detect particles that can be used normally, so the general storage plant will flow these particles to the downstream packaging plant for processing, recycling.