Due to the softness of tin, processing the metal using a machine is difficult, so most of the work is processed by hand. It is hard to corrode, has no harmful effect to the human body and has no metalic smell. The tinware is commonly used in Japan for sake-ware as it has ion-effect, easy to make warm, good for keeping the warmth longer and effective in making sake tender and mellow. Also, tin has anti-bacteria effect and so even water keeps freshness and a flower lasts longer. These products will even become much glossier and more beautiful as you use them. The form were deigned about 100 years ago.