Source: Bacillus Subtilis microbial fermentation Activity: 100,000 U/g standard (50,000–200,000 U/g customizable) Working Range: pH 6.0–8.0, 40–55°C Appearance: Off-white fine powder, fully water soluble Grade: Pure food grade, no additives Packaging: 1kg foil bag / 25kg drum / private label Shelf Life: 24 months (cool & dry sealed storage)