Bilberry Extract Professional Manufacturer Specification: 1) Proanthocyanidins(PAC): 8%,10%,25% 2) Anthocyanidins: 10%-25% China Origin Bilberry ... Extract Professional Manufacturer, ISO 9001:2008 Specification:1) Proanthocyanidins(PAC): 8%,10%,25%2) Anthocyanidins: 10%,15%,25%Function: 1 ...