In addition, chromium resource in China is very limit, so the research of chrome-free and less-chrome tanning agent are very imperative.
此外我国的铬资源也极为有限，因此研究少铬和无铬鞣剂势在必行。
The high exhaustion chrome tanning mechanism of ECPA auxiliary was explored by means of investigating the interaction among the auxiliary, collagen and the chrome tanning agent.
通过研究大分子铬鞣助剂ECPA 与皮胶原、铬鞣剂间相互作用以及ECPA 助鞣的革坯铬结合牢度，探讨了ECPA 的高吸收铬鞣机理。
The preparation of auxiliary tanning agent from chrome shavings has been studied in this paper.
本文对从铬革屑中提取胶原产物制备助鞣剂的方法进行了探讨。
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