Production of nylon produces nitrous oxide which is a greenhouse gas 300 times more potent than carbon dioxide. Both polyester and nylon also break down in washing machines leading to the build up of microplastics in our water systems.
Electricity is needed to run machinery such as sewing machines and air pumps in textile factories. Huge amounts of heat is needed for washing, drying and dying the cloth.纺织厂的缝纫机和气泵等机器的运行需要电力。洗涤、烘干和染布则需要大量的热量。
The further costs of transporting the garments produces additional CO2 as the vast majority of garments have travelled by ship. Ships burn bunker fuel which contains 1800 times more sulfur than US domestic vehicle fuel, making shipping a significant polluting sector.（https://www.ekoenergy.org/how-polluting-is-the-fashion-industry）