Since its establishment, Blue Whale International has always adhered to strict quality requirements of safety, soundproofing, explosion-proofing, and earthquake resistance. Our products (double vestibule doors, anti-theft doors, vestibule doors, cast aluminum doors, steel-wood doors, door-in-door) have all withstood the test of time. Therefore, Blue Whale International is not just a "brand," but also a "prestigious brand" that values quality and takes responsibility for consumers.