Profile: Beijing Refine Biology Co., Ltd. is a manufacturer and distributer of botanical extracts such as magnolia bark extract, marigold extract, common cnidium extract and kidney bean extract. Phaseolin is a protein extracted from white bean which is known to have anti-alpha amylase activity. It can be used in the treatment of diabetes and over-weight. Grape seed extracts are industrial derivatives from whole grape seeds. Typically, the commercial opportunity of extracting grape seed constituents has been for chemicals known as polyphenols, including oligomeric proanthocyanidins recognized as antioxidants.