Japan has a system of recycling marks, , which indicate and classify recyclable materials.

They are similar to the resin identification code

Resin identification code

The SPI resin identification coding system is a set of symbols placed on plastics to identify the polymer type. It was developed by the Society of the Plastics Industry in 1988, and is used internationally....

s, in that they have surrounding arrows, with text inside to indicate the type of material.

Rather than using the triangular recycling symbol

Recycling symbol

The universal recycling symbol or in Unicode) is an internationally recognized symbol used to designate recyclable materials. It is composed of three mutually chasing arrows that form a Möbius strip ....

 for all materials, with differing text, the shape of the arrows also varies, which allows them to be distinguished at a glance. The marks themselves are sometimes known by shorthand names, such as .

See also

• Recycling symbol
  Recycling symbol
  The universal recycling symbol or in Unicode) is an internationally recognized symbol used to designate recyclable materials. It is composed of three mutually chasing arrows that form a Möbius strip ....
  
  
• Green Dot (symbol)
  Green Dot (symbol)
  The Green Dot is the license symbol of a European network of industry-funded systems for recycling the packaging materials of consumer goods. The logo is trademark protected worldwide.- Background :...
  
  
• Resin identification code
  Resin identification code
  The SPI resin identification coding system is a set of symbols placed on plastics to identify the polymer type. It was developed by the Society of the Plastics Industry in 1988, and is used internationally....