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Welcome to Xi'An Rainbow Bio-Tech Co., Ltd., a leading manufacturer of high-quality melatonin for sleep. Our factory produces premium melatonin supplements designed to support a restful night's sleep. Melatonin is a hormone that naturally occurs in the body and helps regulate the sleep-wake cycle. However, many people may have difficulty producing enough melatonin on their own, which can lead to sleep disturbances. Our melatonin supplements provide a safe and effective way to address these sleep issues, allowing you to wake up feeling refreshed and rejuvenated. At Xi'An Rainbow Bio-Tech Co., Ltd., we take pride in our commitment to quality and purity. Our products undergo rigorous testing to ensure that they meet our high standards for potency and safety. We are dedicated to providing the best possible products at competitive prices. Contact us today to inquire about our pricelist and learn more about how our melatonin supplements can support your overall health and well-being.