Itisalsoimpermeableandpreventscontaminantssuchaspetroleum,insecticides,andfertilizersfrompollutingthewatersystem.
截至收盘,上证YkQH指报收于3268.56点,上涨2.17%,成交1573.04亿元;深证成指报收Kvrs10658.94点,上涨2.18%,成交1679.71亿元。