http://www.bjpalmtree.com/the-manufacture-process-of-artificial-palm-trees.html The outdoor artificial palm trees made by our company adopt the outer skin of the simulated herringbone bark tree, the national standard steel structure stress bar is set in the trunk, and the leaves are made of PE plastic and other high-performance environmental protection materials. it is with corrosion resistance, high temperature resistance, UV protection, long-term green and non-toxic environmental protection. Leaves and brown hair can be made with flame retardant properties according to customer requirements.