Polyvinyl chloride or PVC is a plastic material obtained by polymerization of vinyl chloride monomer. It is an amorphous polymer with very low crystallinity.

Polyethylene is a low cost standard plastic. There are several types: HDPE (High Density Polyethylene), LDPE (Low Density Polyethylene) and copolymers such as LLDPE. 

Polyethylene is a low cost standard plastic. There are several types: HDPE (High Density Polyethylene), LDPE (Low Density Polyethylene) and copolymers such as LLDPE. 

Thermoplastic of the polyamide family developed in 1988.

The light grey laser marking on a dark grey background reveals relevant contrasts for quality marking in this PA 66 fiberglass.