
According to the standard of EN ISO 20349:2010, the following safety tests have been passed:
1. Flame resistance of upper material: test time 10 ± 1s. The duration of open fire should be ≤ 2 seconds, and the duration of dark fire should be ≤ 2 seconds. 2. Bottom heat resistance (HRO): The bottom is heat resistant to 600 ℃, and the test lasts for 1 minute. The bottom must not have any melting or carbonization phenomenon; 3. Thermal insulation test (HI3): Place the shoes in a sand bath environment at a test temperature of 250 ℃. After 40 minutes, the temperature inside the shoes should not exceed 42 ℃. At the same time, the sole should not have carbonization or embrittlement