Metal cans are stamped from metal sheets (usually tin-plated plates, chrome-plated plates, cold-rolled steel plates, aluminum plates, etc.) and are used to store food or items. Its emergence is a milestone in food storage and transportation. According to the different composition structures and manufacturing methods of metal cans, they are usually divided into two types: three-piece   cans and two-piece cans. The three-piece can has been around for nearly 200 years. Although it has been improved many times, its basic composition is made of three […]