Technical FAQ &
Compliance Guide

Absolutely. We actively encourage third-party verification and support it in two ways:

Pre-shipment: We can arrange testing through SGS, Intertek, or Eurofins at your request. Reports are typically available within 5-7 business days and can be included in the shipping documentation.

Post-receipt: If your in-house QC results differ from our COA by more than 0.5%, we will immediately arrange re-testing at our cost and issue a replacement batch if confirmed non-conforming. We maintain 3-year sample retention for every production lot.

Our GMP-certified facility in Shandong implements a four-stage quality control protocol: (1) Raw material incoming inspection using FTIR fingerprinting; (2) In-process monitoring at critical control points every 2 hours; (3) Pre-packaging final QC with full HPLC/UV analysis; (4) Retention sample archiving for 36 months post-shipment. Our ISO 9001 and HACCP certifications mandate documented deviation protocols -- any batch falling outside specification is quarantined and reworked before release.

Yes. Our R&D team provides full custom formulation support across three service tiers:

MOQ varies by product complexity. For standard catalog items, there is no minimum order -- we accept sample quantities from 100g to 1 kg for initial evaluation. For custom synthesis projects, the typical MOQ is 10-50 kg depending on raw material availability and process complexity. For biological products (Nisin, Natamycin), MOQ starts at 5 kg. Please contact our sales team with your specific requirements for an accurate quote and feasibility assessment.

Yes. Intellectual property protection is standard practice for all OEM and custom synthesis clients. We sign a mutual Non-Disclosure Agreement (NDA) before any formula discussion begins. Your proprietary blend specifications, ratios, and production processes are stored in an access-controlled system visible only to the assigned production team. We do not share, replicate, or sell any client-specific formulations to third parties. Upon request, we can also provide an exclusive supply agreement preventing us from producing the same formula for competitors in your market region.

Yes. All products listed in our catalog that are approved under EU Regulation No. 1333/2008 are manufactured and tested to meet the corresponding EU purity criteria specified in Commission Regulation (EU) No. 231/2012. Each product's EU compliance letter explicitly references the applicable E-number, permitted food categories, and maximum usage levels. Our regulatory team monitors EFSA updates and proactively adjusts specifications when amendments are published. For products with dual FDA/EU approval (e.g., Ascorbic Acid, Nisin), both compliance letters are included in the documentation package.

Halal and Kosher certificates are available for the majority of our natural additive product lines. To obtain the relevant certificates:

1. 1 Email sales@buychemic.com with the product name, CAS number, and your intended market destination
2. 2 Our documentation team will verify current certificate validity (we maintain annual re-certification with ISWA for Halal and OK Kosher for Kosher)
3. 3 Certified PDF copies are emailed within 24 hours; original stamped copies can be included in your shipment documentation

Note: A small number of products derived from animal fermentation (e.g., Nisin) require Halal slaughter-source verification -- our team will advise on a product-by-product basis.

Yes. We have extensive experience supporting customs clearance across 128+ countries. Our standard export documentation package includes: