This is a safety sign designed to conform to JIS Standard Revision (2005). Eco Uniboard (Eco-Mark certified material). What is Eco Uni Board (Eco Mark certified material)... A new material made from recycled polypropylene. ● Water resistant and durable, widely used on display boards and sign boards for indoor and outdoor use. ● Shock resistant, durable and crack resistant. It can be reused as a resource waste, and even if incinerted, it does not generate toxic gases such as hydrogen chloride. "