Ripple form strain core strain material adopt stainless steel fibre frit felt and stainless steel weave network mainly. Stainless steel fibre frit felt whether one adopt stainless steel fibre filter materials through high temperature porous depth type made to frit. Ripple form strain core have space to be rate high filtering area heavy dirty strong spending characteristic such as being strong ability inside. Stainless steel weave network to weave by silk by stainless steel , ripple its form strain core have intensity to be fine difficult to come off , easy to wash , able to bear high temperature , characteristic of using economy etc..