Chirag Enterprises Chirag Wood Polymer Composites (WPC) - a composite alternative wood material created from a combination of recycled wood and plastic. The plastic prevents moisture, rot, insect damage and splintering, Chirag Wood Polymer Composites (WPC) - a composite alternative wood material created from a combination of recycled wood and plastic. The plastic prevents moisture, rot, insect damage and splintering, while the wood prevents UV damage to the plastic and gives the material a more 'natural' look.