This Green Helmet is made of high-density polyethylene, the material of the safety helmet contains anti-oxidant tape and UV absorbers, which can resist aging as well as extend the service life to a certain extent. The material in the surface hardness, tensile strength, puncture resistance, antistatic and other mechanical strength are better than the ordinary construction hard hat, give your head full protection This Green Helmet is suitable for construction, chemical, machinery manufacturing and other industries. The safety helmet is not suitable for use in low temperature, combustion risk and electric power operating environment. At the same time, when not in use, it should be placed in a dry and ventilated place away from heat sources.