QA/QC

2025/11/20

Our emphasis on quality assurance has helped Haiyu gain a reputation worldwide for high quality products and provided our loyal customers confidence in committing to long terms supply agreements.

We constantly seek ways to improve our quality systems and welcome any suggestions from our customers or regulatory groups on how to do this.

 We have the following procedures in our quality systems to monitor the quality of products throughout the whole manufacturing process and even up to inventory:  

• Raw Material Quality Inspection (RMQ)
• In-Process Quality Inspection (IPQ)
• Final Product Quality Inspection (FPQ)
• Certificate of Analysis (COA) for our every lot of products
• Maintain retained samples for each lot for at least one year
• Shelf-life analysis data

List of Analytical Techniques used in the Inspection of Products include:  

• Chromatography (HPLC, TLC, GC, IC)
• Chromatography coupled to MS (LC-MS/ESI)
• Spectroscopy (UV, IR, NMR)
• Refractometry
• Polarimetry
• Metallic Analysis (AAS, ICP, ICP-MS)
• Elemental Analysis
• Titration (Acid-Base Titration, Karl Fischer Titration)
• Amino acid analysis

For enquiries or comments on quality on products and services, please contact: dikarmun@hotmail.com.