Profile: Tai'an Zhonghui Plant Biochemical Co.,Ltd. manufactures plant extracts, herb extracts and botanical extracts. We supply standardized extracts and ratioed extracts. Our standardized herb extracts includes astragalus plant extract, astragaloside, astragalus polysacchrides, grape seed extract, OPC, green tea extract, soybean extract, isoflavones, kaempferol, paeoniflorin, resveratrols, artemisinin and ursolicacid.