Committed to Elevating Functional Ingredients Through Pharmaceutical-Grade Standards
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Committed to Elevating Functional Ingredients Through Pharmaceutical-Grade Standards
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Built on Expertise

Nanjing Letop Biotechnology Co., Ltd. is a high-tech enterprise specializing in the R&D, manufacturing, and commercialization of functional ingredients. Built on our fermentation platform and core enzymatic catalysis technologies, we combine pharmaceutical-grade standards with end-to-end quality management to develop high-purity, high-activity functional ingredients supported by scientific validation.
Today, we provide more than 20 functional ingredients for commercial supply, serving a broad range of applications across nutraceuticals, food, medical aesthetics, cosmetics, and pharmaceutical intermediates.


Discover the Precision of LETOP
Global Markets
A Technology-Driven Company Focused on Functional Bio-Ingredient Innovation
Nanjing Letop Biotechnology is dedicated to the R&D and commercialization of functional bio-ingredients, providing high-quality ingredient solutions for the nutrition and health, medical aesthetic and skincare, and life sciences sectors.
Leveraging our core technologies in biofermentation and enzymatic catalysis, with a joint R&D system with pharmaceutical companies in China and the United States, we have established integrated capabilities across R&D, manufacturing, and quality control. We currently offer 20+ commercially produced ingredients, serving 300+ customers in 10+ countries.
Supported by two manufacturing bases in Nanjing and Hechi, Letop continues to advance biotechnology innovation, delivering high-purity, high-activity, and high-stability ingredients that create long-term value for customers worldwide.
Our Expertise
Setting New Standards for Functional Ingredients
- Science-Driven
Every functional benefit is supported by data, with safety rigorously validated. - Quality-Focused
We uphold pharmaceutical-grade quality standards and maintain strict control at every stage. - Cross-Industry Expertise
We combine expertise across nutrition, skincare, and pharmaceutical applications to bridge industry boundaries. - Integrated Support
From ingredients to finished products,we provide comprehensive support throughout the development process. - Trusted Partnerships
We build long-term partnerships through consistent quality, proven performance, and integrity.