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Welcome to Xi'An Rainbow Bio-Tech Co., Ltd., a leading manufacturer and supplier of high-quality herbal extracts. We are proud to introduce our latest product, Quercetin Sophora Japonica, which is carefully extracted from the buds of the Japanese Pagoda tree. Quercetin is a powerful antioxidant and anti-inflammatory compound known for its numerous health benefits, including supporting cardiovascular health, promoting healthy aging, and boosting the immune system. Our Quercetin Sophora Japonica is manufactured in our state-of-the-art factory using advanced extraction techniques to ensure the highest level of purity and potency. We guarantee top-notch quality and competitive pricing, making it the ideal choice for dietary supplement manufacturers, pharmaceutical companies, and health-conscious consumers. Contact us today for our pricelist and experience the difference with our Quercetin Sophora Japonica. Trust Xi'An Rainbow Bio-Tech Co., Ltd. for all your herbal extract needs.