WPC window and door frames (850DENSITY) are  durable, eco-friendly  and aesthetically pleasing option for home owners who want a low-maintenance and reliable window and door Frame solution. By Using WPC Product You Are Supporting And Helping to our nature. Avoids Deforestation. WPC Products are Durable and Long lasting , Zero maintanance. No Bend, strinkage , Crack, etc issues in WPC.