This standard specifies the product specifications, requirements, test methods, inspection rules, labels, packaging, transportation and storage of feed additive vitamin D3 particulate products. This standard applies to feed additive vitamin D3 oil as raw material, with a certain amount of 2,6-di-tert-butyl-4-methylphenol (BHT) and (or) ethoxyquin as stabilizer, Microparticles made of excipients such as gelatin and starch. This product is used as a vitamin feed additive in the feed industry. Chemical name: 9,10-ring-opened cholesteric 5.7,10(19)triene 3β-alcohol Molecular formula: C27H44O Relative molecular mass: 3894.65 (international relative atomic mass in 1999)