... order to reduce the costs,givecustomers mor chioces.4.The products has the fire protection,the waterproofing,the corrosion resistance, ... the quality firmly,the quantity light,the heat preservation,the surface is smooth,does notcontain the formaldehyde and other deleterious substances,the ... , eco-friendly, saving forest resources2. With the look of the natural wood but less timber problems3. Moisture/ ...