亚洲精品免费视频_а√天堂中文最新版地址bt_99热99re8国产在线播放_亚洲成a人v欧美综合天堂麻豆

To use

Used for cotton fabric and organic bleaching;
Used as reducing agent in dyestuff, paper making, leather making, chemical synthesis and other industries;
Pharmaceutical industry for the production of analgin and aminopyrine intermediates;
Edible grade products used as bleach, preservative, antioxidant;
Used for the treatment of wastewater containing chromium and as an electroplating additive.