1. The ingredients used are those that have been tested and approved for use in food by both FEMA: Food Flavour Extraction Manufacturers Association and FDA: Food and Drug Administration.

2. Each batch of raw material is inspected before it is put into storage, and samples are kept.

3. Testing instruments: Agilent gas chromatograph, German automatic portable density meter and refractometer, etc.

4. All quality processes are carried out in strict accordance with the ISO9001 quality management system...