Most plastic has code in the bottom or its side.. the triangle symbol...
do you know what does it mean?
That is Resin Identification Code, which is a set of symbols placed on plastics to identify the polymer type..
It was developed by the Society of the Plastics Industry (SPI) in 1988
 PETE or PET (Polyethylene terephthalate)
Polyester fibres, thermoformed sheet, strapping, and soft drink bottles
 HDPE (High density polyethylene)
Bottles, grocery bags, recycling bins, agricultural pipe, base cups, car stops, playground equipment, and plastic lumber
 PVC or V (Polyvinyl chloride)
Pipe, fencing, and non-food bottles
 LDPE (Low density polyethylene)
Plastic bags, 6 pack rings, various containers, dispensing bottles, wash bottles, tubing, and various molded laboratory equipment
 PP (Polypropylene)
Auto parts, industrial fibers, food containers, and dishware
 PS (Polystyrene)
Desk accessories, cafeteria trays, plastic utensils, toys, video cassettes and cases, and insulation board and other expanded polystyrene products (e.g., Styrofoam)
 OTHER or O
Other plastics, including acrylic, acrylonitrile butadiene styrene, fiberglass, nylon, polycarbonate, and polylactic acid
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