Dear Sir Madam, Our company is looking for zinc sulde ore(slerite,ZnS) suppliers all over the world,mainly from Africa and Asia,the requirements are:Zn content 30% min,S(sulr) 16% min,moisture 6% max.,trial shippment for 100-500MT,payment:CIF or CNF Xiamen,by L C.If you have such products,please me for deeper communication. Best Regards, May Wu