leather from Wenzhou University Institute developed a new type of non-chrome tanning in leather technology uses zirconium as the major component of the LTA-1-type metals (chromium-free) composite auxiliary tanning agent, and its accompanying non-chrome tanning partner D8, in the non-chromium metal tanning agents, aldehyde tanning extract and tanning agent based on three categories of non-chrome tanning agent, whether from tanning leather shrinkage temperature, follow-up process, the allocation of materials, leather integrated performance, or from the environmental protection and ecological considerations, non-metal composite chromium tanning agents are most likely to become the mainstream of chrome tanning agent.

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