Who writes and reviews
Technical notes, method guides, glossary entries, and regulatory summaries are prepared by the ingredient team and is subject to technical review before publication by the people responsible for specifications, quality documentation, and customer technical support. We do not publish named-author credentials we cannot verify, and we do not present the content as independent journalism or as a substitute for your own regulatory review.
Product specifications are owned by the quality and commercial teams. A specification sheet is confirmed in writing at quotation; a web page is never the final contract.
What we rely on
Regulatory pages link to the official texts we used, such as EUR-Lex, the U.S. eCFR, FDA guidance pages, and UK legislation. Method pages refer to pharmacopoeial and ICH guidance where relevant. Product pages rely on the specification and the analytical methods we can actually run or verify with a laboratory.
Where a number is typical rather than verified for a specific lot, we say so. Where a claim depends on a market, a dose, or a finished product, we say that the buyer's regulatory advisor must confirm it. We do not present a facility certificate as a product certificate, and we do not present a specimen document as a batch record.
Review dates and corrections
Pages that carry regulatory or analytical content show a review date. We review the pages when a cited rule, a method, or a product specification changes, and at least once a year. If you find an error, a broken source, or a statement that is no longer accurate, write to info@rainwoodbio.com with the page URL and the correction. Verified corrections are made and the review date is updated.
Commercial interest
Shaanxi Rainwood Biotech Co., Ltd. sells botanical extracts. That is a commercial interest, and we disclose it rather than pretending the content is independent journalism. The technical library is published because buyers ask these questions during supplier qualification, and because a better-informed buyer makes a better customer.
We do not publish paid rankings, invented testimonials, client logos without permission, or claims that a competitor is unsafe. Where we describe a sourcing risk, it is a risk that applies to the category, not an allegation about a named company.
Scope and limits
The site is business-to-business information about ingredients and documentation. It is not medical advice, a label review, a legal opinion, or a guarantee of regulatory acceptance. Finished-product compliance, claims, and labelling remain the responsibility of the brand and its advisors.
For how to cite a page, see the company facts and citation guide. For the AI-readable site summary, see llms.txt.