Foaming sealing strip is a kind of sealing strip which makes use of the characteristics of some materials and makes the inner hole appear by processing. It is divided into EPDM foam sealing strip, silicone foam sealing strip and PU foam sealing strip. The foaming sealing strip adopts microwave vulcanization technology to form once, the surface is bright and clean and beautiful, and there is no mark. Good elasticity and compression deformation resistance, excellent aging resistance. Excellent flame retardant performance, low smoke and low toxicity; The product has stable performance and high dimensional accuracy.