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