Changge Yuguan Tannin Extract Co., Ltd. was founded in 1987. It is an enterprise that produces tannin extract, activated carbon, and desulfurization catalyst series products under the direct guidance of relevant scientific research experts from the Department of Chemistry of Zhengzhou University and the National Chemical Synthetic Ammonia Design Technology Center. Since its development, the company has a large scale and strong technical force; complete testing and research equipment, advanced production equipment, and stable and reliable product quality. Among them, two products of our company won the gold medal at the 1995 China Science and Technology Boutique Expo. The annual output of tannin extract is 1,500 tons.

Since the company was founded, our products have been sold to more than 20 provinces and cities in China, more than 300 large and medium-sized fertilizer plants and chemical plants, and are trusted by many users. The company successfully passed the ISO9001 quality system certification in 2004.

Our company's current main products include pure rubber bowl tannin extract, instant tannin extract desulfurization catalyst, sulfonated tannin extract, KM desulfurization catalyst; RS-1 type, RS-2 type, RS-3 type, RS-4 type activated carbon; PXT series Fine desulfurizer; Type 93 high-efficiency desulfurization catalyst; YGF iron oxide series products; YG-PDS new high-efficiency desulfurization catalyst, YG888 high-efficiency desulfurization catalyst; Y306 series high-efficiency deoiling agent at room temperature; MSQ, MOS desulfurization catalysts, etc.