How do I see if the plastic cup is qualified?
They attach triangular recovery marks to plastic products and use figures 1 to 7 and English abbreviations to refer to the type of resin used in plastics.
The United States Plastics Industry Association (Society of Plastics Industry, SPI) made use of plastic products of plastic type sign code, is composed of representatives of the circular triangle in the middle of the three arrows, plus digital sign
As a result, the identification of plastic varieties has become simple and easy, and the cost of recycling has been substantially reduced. Today, many countries in the world have adopted the SPI logo scheme. China enacted almost identical labeling standards in 1996.
