What is choraplast?

Answer 1

I think you mean "choroplast."

Choroplast is a corrugated plastic material often printed on and used for outdoor sign usage. Being plastic, it holds up to the elements well.

Answer 2

Choraplast is a brand of plastic materials commonly used in packaging and construction. It is known for its durability and versatility in various applications due to its ability to be easily molded and shaped.