Performance and service life are equivalent to vulcanized ethylene-propylene rubber seals. The processing energy consumption is low compared to vulcanized ethylene-propylene rubber strips (equivalent to PVC). It does not contain heavy metals such as halogen and lead, and can be recycled after a few years. It meets the requirements of green building materials and has a small proportion. It seems that the purchase unit price is high and the actual use cost is low. The tightness of the sealing strip and the PE outer membrane increase the service life of the product to a large extent. Not only the color is rich and colorful, but also more choices. The PP skeleton in this material also has a very good fixing effect on the product , After the installation is successful, it can effectively prevent the product from shrinking. Special-shaped silicone foam strips are used for non-stick surfaces or good electrical insulation properties. Because of these excellent comprehensive properties, they are used in aerospace, aviation, automotive, electronic appliances, chemical industry, instrumentation, machinery, medical and health and Widely used in daily life.