It is ok to use wooden floors for stair treads, but the outdoor service life may not be very long, so it is good to use them indoors. Nowadays, plastic flooring materials are widely used, such as flagship PSP flooring, which is now widely used. No matter whether the flagship floor is used outdoors or indoors, there are corresponding product recommendations. The floor has passed the tests of ultraviolet resistance, aging resistance and acid and alkali resistance, and there is no problem in outdoor use. Moreover, the flagship floor is non-slip, dirt-resistant, wear-resistant, long in service life and easy to clean, which is worth recommending.