韩国采购需求：草本提取物、植物提取物、甜味剂、益智成分、蔬菜和果汁粉、精油

I am currently seeking quotations for several herbal extracts, specifically Naringenin, Quercetin, Glycyrrhizin, Thymoquinone, and extracts from Phyllanthus emblica, Trigonella foenum-graecum, and Epimedium koreanum Nakai, as well as Piper nigrum, Eclipta Prostrata, Chestnut Shells, and Dimocarpus longan. Could you please provide the unit price per kilogram for the highest grade of each of these products? Additionally, if available, I would appreciate details on minimum order quantities, lead times, and any volume discounts you might offer. Thank you!