1. Product indicators Alfa- Arbutin Beta- Arbutin HPLC above 99% Extraction site Character inspection appearance White powder smell special taste special Physical properties Moisture (%) no above 2.0 Ash content (%) no above 2.0 heavy metal Total heavy metals (calculated by lead) �¢?�¤10ppm Lead (PB) no above 2ppm Arsenic (as) no above 2ppm Mercury (Hg) no above 1ppm Cadmium (CD) no above 5ppm Microbiological detection Total bacteria / (CFU / g) no above 1000 Yeast and mold (CFU / g) no above 100 Pseudomonas aeruginosa / (CFU / g) Do not detect Staphylococcus aureus / (CFU / g) Do not detect Heat resistant coliform / (CFU / g) Do not detect 2. Package specification 1.0kg /Aluminum foil bag ; 15kg / cardboard barrel; 25kg / cardboard barrel 3. Storage method Avoid freezing environment, store in a dark, cool and dry place, room temperature and sealed.