QC microorganisms are well-characterised standard strains and their derivatives, which are widely used in microbiological testing, quality control and production process control in the pharmaceutical, food and beverage, cosmetic, clinical and environmental monitoring fields. As a revolutionary innovation in the field of quality control, commercial QC strains are divided into quantitative and qualitative products. Quantitative products contain a defined amount microorganisms and can be used in quality control experiments that require inoculum quantity; qualitative products contain live microorganisms that are stable and preserved, and can be used as positive control bacteria and standard verification bacteria.CICC has established long-term cooperation relationships with bioMérieux (France), Thermo Fisher Scientific™ (USA), Microbiologics^® (USA), and CICC has become the exclusive Chinese distributor of their quality control microbiological products, providing safe, accurate and easy-to-use quality control microbiological products to the relevant industries and fields in China.