There may be quality issues.

The standard of down cleanliness is the number of pollutants contained in each piece or gram of down, which is called down cleanliness. Water is used as a carrier, and the tiny dust particles contained in the down are transferred into the water through vibration. , these tiny dust particles are suspended in the water, and then an instrument is used to measure the transparency of the water to determine the cleanliness of the down. If the cleanliness is ≥450mm, it is qualified. On the contrary, it does not meet the index requirements, which means that there are many impurities in the down and it is easy to absorb various bacteria in the down. Wearing down products with poor cleanliness can cause allergic reactions, asthma and other diseases, which is harmful to human health. produce adverse effects.