Autumn and winter are coming, and the weather is getting colder. The down jackets that once helped us through the cold winter are about to come on again in armour to withstand the cold.

The core of down products is the feathers filled in the products. But because consumers can't see the feathers in the products, they can't have an intuitive impression. Even if they can see, because of the particularity of the feathers, they can't distinguish the quality of the down products, so ...

Are you really sure you'll pick down quilts?Let's do three tests.Is goose's down warmer than duck's down when it's about one year old?The same size of quilt, the more down filling the better?

Warmth retention is good because each filament of down is made up of thousands of tiny scales. Each scale is hollow. These tiny pores are filled with plenty of still air. Because the conductivity of air is the lowest, a natural barrier is formed, which prevents the convection of hot and cold air.

首先用户需要定期做好拨码开关的清洁保养工作，如果发现开关用品上落有较多的粉尘污渍话，用户就需要使用干净的软布来把它擦拭清洁干净，使得拨码开关能够始终保持良好的使用状态。也让用户能够放心进行选择运用。其次如果拨码开关在使用当中出现异常状况的话，用户要及时进行排查处理，假如拨码开关零件已经损坏的话，那...

一般拨码开关上会有“on”和“off”这两个英文名字标志。而“on”代表的是开的意思，“off”则代表关的意思。如果拨码开关箭头指向“on”的话，这则表示拨码开关正在运行工作当中。而如果拨码开关箭头指向“off”的话，这就表示拨码开关已经停止运行工作。大家可以根据箭头指示来判断拨码开关的运行使用状态。另外想要让...