This standard specifies the terms and definitions, product classifications, requirements, testing methods, inspection regulations, as well as icons, packaging, transportation, and storage of Protease preparations.

This standard defines the regulations for the testing of bacillus subtilis in feed microbial preparations and is applicable to testing and calculations.

Enzyme preparation mixed with feed or fed directly to pigs can greatly improve the conversion, digestion and utilization of nutrients in the feed, significantly reduce or eliminate the side effects of toxic substances and anti-nutrient substances in the feed, and has high economic and environmental benefits.