Scope of application: It is applicable to determining the fire resistance characteristics of horizontal building components such as walls, beams, columns, floor slabs and ceilings under standard fire exposure conditions. Comply with the test requirements of standards such as GB/T9978.1-2008, ISO834-1:1999, GB/T9978.5-2008, ISO834-5:2000, GB/T9978.6-2008, and ISO834-6:2000.