Storage conditions:Transported in ice packs and stored at -20°C. The shelf life is 12 months. · 9 types of highly effective inhibitory ingredients—In addition to the 6 broad-spectrum protease inhibitors (AEBSF, aprotinin, bestatin, E-64, leupeptin and pepstatin A ), Benzamidine HCl, Phosphoramidon, and 1,10-phenanthroline are added to provide a more comprehensive protein protection effect.