Ox gallstone (Niuhuang) We are full time exporter of high quality natural ox gallstone/cow Bezoar. Our product obtained from disease free cattle. We can supply up to 1 kgs monthly. Shipment prompt by air courier (DHL, UPS, FedEx). Price depends on ratio of wholestone/broken stone. Please provide with your ratio and price (CIF) for quating.Good Luck!