30% Zn Zinc sand,5% Cu Zinc sand  in every goods, zinc must be more than 30%,copper more than 10%, nickel must be more than 2%, Lead must be more than 50%. iron is more less more better We purchase large product monthly For having more information about our company,pls visite our home page or ShenZhen YiShunDa Logitics CO.Ltd page. Pls provide bellow:  quantity supply monthly  samples provide  houseware photo  your best FOB price If you can supply,pls contact us immediately,thanks