Variable wind resistance sand blocking and fixing net

Ring filter and its preparation process

Fixed components of sand net

Polymer masterbatch containing anti-mite agent, monofilament for anti-mite air filter and its preparation process and use

Monofilament for bamboo charcoal air filter and its preparation process and use

A double-layer honeycomb structure filter

A kind of filter material and its preparation method and use

A surface leveling treatment method of air framed filter

The use of a plate heat ventilation and a container whose housing contains at least one such plate heat ventilation