What Are The Main Advantages Of Composite Decking Outdoor WPC products? First of all, the wood plastic Composite Decking Outdoor WPC materials are 100% recyclable; it is long-lasting, stable for the outdoor conditions, like sun exposure, rain, temperature ariations etc; it requires low maintenance; etc. Why the keel is necessary for the intallation? When we install the Composite Decking Outdoor WPC flooring, firstly the keels are fixed in the ground surface with the T-clip and then we put the solid decking board on the keels. You know the wpc decking board can't be put on the ground surface directly. For one thing, it can affect of the planeness of the flooring surface after installation. For the other thing, it is not good to control the drainage of the bottom, because the wpc decking board is mainly used for outdoor, which rains a lot. So keels must be used to hold the solid decking board when installed. If there is one piece of the decking board broken,...