Extract of the heartwood of acacia catechu used for dying and tanning and preserving fishnets and sails; formerly used medicinally.
用儿茶树的心材提取，用于印染、制革、渔网和帆蓬保养，以前用于医药。
This paper have studied vegetable tanning technology of cowhide light leather with modification volanea extract for chief tanning agent and with yellow cow taw for raw skin.
探索了用橡木宛栲胶植鞣黄牛皮沙发革的工艺，分析测试了所鞣坯革的物理及感观性能，为植鞣牛皮轻革产品提供了一些理论与实验依。
This paper have studied vegetable tanning technology of cowhide light leather with modification volanea extract for chief tanning agent and with yellow cow taw for raw skin.
探索了用橡木宛栲胶植鞣黄牛皮沙发革的工艺，分析测试了所鞣坯革的物理及感观性能，为植鞣牛皮轻革产品提供了一些理论与实验依。
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