Asbestos fibres, resistant to heat, fire and chemicals, were widely used in construction and insulation before being linked to asbestosis, lung cancer, mesothelioma and other cancers.

The microstructure of high performance fire-resistant and weathering construction steel after different heat treatment regimes was studied by using OM and TEM.

A comprehensive evaluation of the current status of fire-resistant forest belts is of guiding significance in the future to their planning and construction.