Forums » Discussions » "The Society of the
iceeci
"The Society of the Plastics Industry [now called the Plastic Industry Association] took the recycling logo, which is in the public domain so it's not copyrighted, and they made it a bit more triangular in shape and put numbers in it to create the resin codes," says Dunaway. "It telegraphs to the consumer that this is something that is recyclable, and maybe perhaps even has been recycled before."
อ่านต่อเพิ่มเติม โรงเรียนวัดวังรีบุญเลิศ
สาระสำคัญ ไซโตไคน์