Even though it consists in part of plastic, which costs energy to produce, polyolefins are pretty low on the cco-hate list. They degrade into carbon and oxygen.

• 尽管“洁净材料”的成分中含有塑料，生产过程仍需耗费能源，但聚烯烃对环境的影响非常小，能被降解成碳和氧。