Metal Pot: 1) With different volume: such as 1.5 L ,3L and 5L. 2) material of the interior: Iron. 3) Finishing: copper plating or nickel plating. NOTICE: We are the hardware manufacturer andmake metal according to the customer's drawing or requirement. Our factory has a long history in XIAMEN, CHINA We have rich experience on export .. OEM orders are welcome..