The Weihai Ziguang Testing Center covers an area of 2000 square meters, with a testing area of over 1500 square meters and nearly 200 main instruments and equipment. The testing center includes a microbiology room, a sample room, a pretreatment room, a physical and chemical room, a spectroscopy room, a liquid chromatography room, a gas chromatography room, a balance room, a high temperature room, a reagent room, a standard room, a data room, and a sensory evaluation laboratory. In addition, there is a 500 square meter clean area with a capacity of 10000 level. Currently, the testing center has 62 CNAS qualifications and specializes in food physical and chemical testing, as well as microbiological testing projects; Food additives such as nitrogen. The testing center actively builds a laboratory quality management system, strictly implements technical specifications and industry standards for testing work, accumulates rich practical experience, and the certification rate of testing personnel reaches 100%. In December 2023, Weihai Ziguang Testing Center successfully passed the evaluation of China National Accreditation Service for Conformity Assessment (CNAS) and obtained the National Laboratory Accreditation Certificate (registration number: CNAS L 19950) on January 23, 2024. Weihai Ziguang Testing Center has reached the national (international) level accreditation standards in terms of testing hardware facilities and equipment, testing technical capabilities, and laboratory management level.