Instructions for use: use this product, filter cotton is made, can effectively filter the air containing dust (such as powder, dust, smoke, dust, sand and dust particles, this product is a double-layer hollow structure, in the use of the process if found near the intake valve side too much dust, can put the filter into two to use (in the separation, it is necessary to gently the). If the filter dust or breath when you replace the filter in a timely manner. |
QQ
