The biggest advantage: It''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s not easy to get a cocoon if you hold it firmly! Single keel! ! !
The surface is covered with a layer of plastic film, which needs to be removed before use
![](https://img.alicdn.com/imgextra/i2/25241078/TB2LxwzXF_AQeBjSZFyXXb1bXXa_!!25241078.jpg)