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Since 1992, our company's predecessor, Zhejiang Union Business Co., Ltd., has been the sole agent in China for the hardwood tannin products produced by Argentina's UNITAN company. For 29 years, we have been committed to extensively promoting animal breeding and sugar production in China. Tannin series products in various industries such as tanning, tanning, corrugated boxes, mining, petroleum, highways, etc. Among them, the unique condensed hardwood tannin sugar flocculant and hardwood tannin feed additive are ahead of other plants in the world. On top of Ning series products.