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Originated from Non-epizootic area and had been washed with detergent, rinsed for an hour and dried with steam in a high temperature drier of 120 degrees centigrade for 30 minutes.
1 Big down cluster, size from 5%-95%.
2 Lowest odor, oil and fat content.
3 Oxgyen value: ≤10mg/100g
4 Turbidity: ≥500MM
5 Moisture content: ≤12.5
6 Filling power: ≥550
Washed grey duck down
