GENERAL QUESTIONS What the GRINWOOD WPC made of? GRINWOOD WPC boards are ECO-friendly wood and plastic composite products composed from 30% HDPE, 10% additives and 60% wood/bamboo fiber. Will the color fade because of exposure to the sun? Our superior technology make our boards great resistance against the sun. We have tested direct UV on our boards for hundreds of hours with minimal change. How far apart should the supporting joist be? The supporting joist below the composite decking boards should be a maximum of 350mm apart. In other words, one square meter need: 3 joists and 20 sets accessories (clips & screw). Do I need special tools to install the deck? There are no specialist tools required. The decking can be installed using the same tools you would use to install timber decking. Can I install the decking immediately when received the products? When received your wpc decking boards, we recommend you allow them several days to adjust to your local temperature and conditions before starting working. We do not recommend installing your deck in cold weather. Why choose wpc as outdoor buliding material? Modern engineering and design solutions require modern materials. The usage of wood plastic materials for decking, fences and garden areas is economical, eco-friendly and future-proof solution. Does GRINWOOD have a warranty? Yes, we believe our product is of a high standard and back that up with a warranty for your peace of mind. All of our wood plastic boards have a 15 years warranty. What about your company? We, manufacturing & trading combo in china, our main market are Europe, Asia and North America. we are the largest wpc supplier in Thailand/Korea/Greece now. what is your products executive standard? All of our products are according to ITC, ISO9001, ASTM, INTERTEK. Visit www.grinwood.com for more information