Steel high rate expansion strip series products are developed with the latest international technology, with high expansion, good heat insulation and other characteristics, in case of fire, heat can be rapidly expanded to 15 times more than 50 times the original volume, can completely fill the fire window cavity, maintain the integrity of the fire window, so as to form a strong fire barrier, instantly create an independent safety space, to ensure the human body Security.

Fireproof expansion seal is the replacement of the original cavernoid fireproof expansion seal, which is the first in China. Its comprehensive performance is equivalent or better than that of similar foreign products. In addition to excellent fireproof expansion performance, the product has good flexibility, giving it excellent sealing and shock-proof performance. At the same time, because of the extrusion process, so can be made according to user requirements of various shapes and arbitrary length of flexible fireproof expansion seals, so as to provide convenience for the user's application. The product is an ideal fireproof sealing joint for building fireproof members. It is mainly used for fireproof sealing of all kinds of steel fire doors, such as side seam sealing and middle seam sealing of double doors. At the same time, it can be widely used in elevator door, fireproof glass panel and waterproof, fireproof, sealing and other fields.