1. Specification: 135mm(width)*25mm(thickness), hollow,  grooved in one side and another side 
    sanded.
2. Color: Cedar, Cooper brown, Grey, Coffee, Wood, Teak, Dark grey are available
3. Material: 30% HDPE (Grade A recycled HDPE)
                     60% bamboo/wood fiber (professionally treated dry bamboo/wood fiber)
                     10% chemical additives (anti-UV agent, anti-oxidation agent, stabilizers,      
                     colorants, anti-fungus agent, coupling agent, reinforcing agent, lubricants, etc.)
This material is extruded by professional wood plastic extruding machine under high temperature and pressure, so it is a kind of insect proof, green environmental responsible material based on a 10 years wattantee.