Flame Retardanr Rubber Sponge is a flame retardant rubber sponge that is highly resistant to fire, suitable for structural use in hotel, hospital, building, residential, or even industrial factory. SAPONG brand flame retardant rubber is a sponge rubber developed by PTI TEAM, a special formula of the SAPONG brand. There are production and distribution of both flame retardant rubber seal or fire extinguishing rubber seal, fire retardant sponge and flame retardant rubber sheet. To answer the plaintiff's need for more specialized applications Fire retardant sponge rubber developed by the SAPONG brand at present. We have passed the tests and have Cer. UL certification to emphasize the quality of the products and pass the export standards to various countries.