British standard BS476 single layer fire-resistant glass
The British standard series of fireproof glass is produced in strict accordance with the requirements of British Standard BS476 part22:1987, and has passed the test of British Standard BS476 Part22:1987. All products comply with the safety requirements of the Hong Kong Fire Department and the Buildings Department. It is also applicable to all countries and territories approved by the BS476 Part 22:1987 standard. Products have been sold to many countries and regions.