应除去CO_2，并使含油污水呈微酸性，可抑制结垢的形成。
It can prohibit the fouling by making the oily wastewater in presence of acidic property and CO_2 removal.
胆汁中包含胆汁酸和胆汁盐、胆固醇及电解质等，保持胆汁呈微酸性。
Bile contains Bile acids and salts, cholesterol, and electrolyte chemicals that keep it slightly acidic.
舒适、止痒：亲如皮肤，PH值呈微酸性，对皮肤无刺激、符合环保及人体健康要求。
Feeding comfortable and relieving itching: the cotton, with sub-acidity PH value, is not skin irritant, If meets the requirement of environment protection and human health.
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