Recycling by product massive number of types of plastic, they each carry a resin identification code, and must be sorted before they can be recycled. This can be costly; while metals can be sorted using electromagnets, no such 'easy sorting' capability exists for plastics. In addition to this, while labels do not need to be removed from bottles for recycling, lids are often made from a different kind of non-recyclable plastic. To help in identifying the materials in various plastic items, resin identification code numbers 1-6 have been assigned to six common kinds of recyclable plastic resins, with the number 7 indicating any
NatureWorks Thai coup d'état and related turmoil it had not committed. Other countries under consideration include Malaysia and Singapore. In 2013 NatureWorks sold 1 billion pounds of Ingeo. Its competitors in the bioplastics industry include DuPont, Braskem (BAK), Toray Industries, Lanxess AG, Bayer, BASF, and Eastman Chemical Company. NatureWorks hosts a conference called "Innovation takes Root", which brings together Ingeo Polymer users. Ingeo biopolymer bears the resin identification code 7 and can be chemically recycled, composted or landfilled. Ordinary home composts cannot break down the polymer, although high-temperature commercial composting systems can. NatureWorks integrated NatureWorks PLA into the recycling system in