CTI Foresight Testing laboratory provides the test of the fire resistance time of large panel method in GB 12441-2018 "Finishing fire retardant paint". First-grade three-layer plywood is selected as the substrate material and evenly coated on the base material according to the wet coating ratio of 500g/m2. The test was carried out after the state of the prepared sample was adjusted. During the test, the heat resistance time was determined by monitoring the temperature rise of the sample's back surface and observing whether the sample burned through. Turnaround time is 11 working days.