... for air conditioner, water filter, water treatment. partname filter foam density21kg/m3 porosity10ppi-100ppi colorred,green,yellow,black, ... ,air conditioner, air filter certificate CA117,BS5852, SGS, REACH filter foam , which used for many filed , we also have sold this type of ... .we manufacture process and size and type of the filter foam.the weather tempertuers is taken into consideration when it ...