Giving a job description of a cinematographer is a bit difficult because the term cinematographer can apply to various jobs ranging from camera operator to director of photography. Most often, the term refers to the director of photography, or top cinematographer on a film, so let's focus on that.
Thermoplastic Polyolefin Elastomer (TPO (POE)). Thermoplastic polyurethanes (TPU) are a class of polyurethane plastics with many useful properties, including elasticity, transparency, and resistance to oil, grease and abrasion. Technically, they are thermoplastic elastomers consisting of linear segmented block copolymers composed of hard and soft segments.
HDPE or PE-HD. When the little triangle has a 2 inside and the code of either HDPE or PE-HD under it, you know that the plastic it adorns is made from high-density polyethylene. Like PET plastics, HDPE plastics are picked up by most curbside recycling companies.