Acrylic (PMMA) Hard ... used for CD cases and yoghurt pots High density polyethylene (HDPE) Stiff, strong, lightweight Lightweight and flexible, can be recycled well, used for washing baskets ...
high-density polyethylene and low-density polyethylene (LDPE), acrylic, polypropylene, and polystyrene. All gave off methane and ethylene in the days after being exposed to sunlight, they found, but ...
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