CP-17-128 is a type of Combiplast, a product developed by company Evonik in Germany. It is a high-density polyethylene which has been modified to improve the properties of the original material. The product has excellent chemical resistance, superior mechanical properties, long-term hydrolysis resistance, excellent insulation and electric characteristics, greater stiffness, and better impact strength than the standard HDPE. The CP-17-128 product is mainly used for applications such as pipes, cable ducts, tanks, and pipe coatings, amongst others.