We,AC Resources Limited,always purchase any grade of molybdenum & tungsten spent catalyst for a long time.quantity:1000-2000mt per month,now we are looking for good supplier,if you can supply,pls do not hesitate to us at any time.Thanks and Best Regards.Jason Purchase managerAC Resources Limitedsourcesltd#comenquiry#acresourcesltd#comacres.jason#gmail#com