ABOUT DONGYU USI

Built on Trust. Driven by Quality. Connecting Global Manufacturing to U.S. Wellness Brands.

For nearly two decades, we have served as a dependable bridge between trusted global manufacturers and U.S. distributors, contract manufacturers, and wellness brands.

ABOUT DONGYU USI

A Trusted Partner Since 2006

Founded in 2006, Dongyu USI partners with leading international producers — including KoncepNutra™, one of China's top L-Carnitine manufacturers — to supply a broad portfolio of high-quality nutritional ingredients to distributors and contract manufacturers across the United States.

Our Tustin, California warehouse, regulatory expertise, and dependable logistics enable fast, reliable fulfillment for customers of all sizes. Our long-standing relationships with reputable global manufacturers allow us to deliver consistent quality, dependable supply, and competitive pricing.

To ensure excellence in quality and operations, our facility is NSF-certified. We stay current with industry regulations and compliance requirements, enabling us to serve as a trusted and knowledgeable partner.