WPC pergola is made of wood and polymer, it is water friendly, 100% recycable, easy to install, guarantee for 10 years Item ... .Hg free. hazardous material freeEasy to installation.With anti-UV formula, suitable for outdoor use. low maintainenceAnti-worm, anti-static, ... :Our production:Our package: WPC pergola blade,durable quality,easy to install,10 years experience supplier guarantee for 10 years