SPF is the abbreviation of Specific Pathogen Free, which means no specific pathogen. SPF eggs are eggs produced from chickens free of specific pathogens. As the raw material of various vaccines, SPF eggs must meet the requirements of no drug residues, no medical history, no antibiotics, and no specific pathogens. SPF chicken embryos are sensitive to various pathogenic microorganisms, and have good reproducibility, which can be used in a variety of virological experiments. The breed of chickens we raise is White Leghorns, and we strictly monitor the health of the chickens. At present, we can provide more than 13 million SPF eggs every year, and has been praised by customers for the stable and high-quality products.