because wood-plastic board is mainly made of wood flour and plastic.
Although wood-plastic panels will be added with appropriate amounts of antioxidants, flame retardants, etc., these will have some toxicity, but they all need to be toxic under high temperature and burning conditions.
So in the normal using, the WPC products are no harm to human, and the production process for making WPC is also no harm to human.
it is a totally environment-friendly product.
So now WPC is widely used in the world for construction, such as WPC decking, WPC door, WPC furniture, WPC house, WPC pergola, WPC fence, WPC construction formwork.