- Indoor-door luxury wood substrate using ultra-fine powder mixed with the polymer resin, through the molding of the manufacturing process. Sen-wood-plastic doors have the following characteristics: environmental health: green paint may be two or thermal transfer technology for surface treatment, non-harmful substances such as formaldehyde. Durable: wood-plastic materials and difficult to deformation; water decay resistance, Fang Zhu anti-mildew, fire-retardant antibacterial