The corrosion of aldehyde condensation solution has been a great difficult technical problem in polyvinyl alcohol fibre production industry, which has been hindering the normal operation of the plant.
维纶醛化液腐蚀是维纶行业的一大技术难题，一直困扰着工厂的正常生产。
The styptic fibre composition is composed of polyvinyl alcohol, gelatin, sweetgum leaf extract and berberine hydrochloride.
一种止血纤维的组成，包括有聚乙烯醇、明胶、枫香叶提取物及盐酸黄连素。
The styptic fibre composition is composed of polyvinyl alcohol, gelatin, sweetgum leaf extract and berberine hydrochloride.
一种止血纤维的组成，包括有聚乙烯醇、明胶、枫香叶提取物及盐酸黄连素。
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