越南采购需求：防火门密封条、防火密封条、防火密封条、门用防火密封条、防火门膨胀密封条、膨胀防火门

I'm looking for high-quality fireproof intumescent sealing strips specifically designed for doors. The dimensions I need are 2.4 meters by 2.2 meters. It's crucial that the product meets all relevant fire safety standards and provides reliable performance to prevent smoke and flames from passing through gaps in the door. Additionally, I'd appreciate it if you could provide information regarding available options, lead times, and any certifications your products have. Please also let me know about the pricing details and any bulk purchase discounts, as we are considering making a larger order if the quality meets our expectations. Looking forward to your prompt response!