韩国三级激情在线观看,白又丰满大屁股BBBBB,亚洲av色噜噜男人的天堂,免费播放男女性高爱潮

New product

Alkali resistant defoamer AS-7521

 

Scope of application:

It can be used for papermaking, textile pretreatment, textile dyeing, textile sizing, industrial cleaning and other fields

Features:

Weak anionic type

Advantages:

It does not contain NP and APEO, and has excellent defoaming and defoaming performance under medium high temperature (60~90℃) and strong alkali (pH =10~14) environment