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1980年的罐头战线已建立起来了。从另一方面说三片焊锡罐长时期以来处于工业的骨干地位。自一百多年使用以来,它已由罐头公司不断地改进成为更灵活,和广泛地为世界中间商所接受。例如;就有一家主要的公司为1,100种食品和饮料品制造2,950只与材料规格相一致的罐头。许多新品种的挑战者(各有其优点和缺点)一致起来反对三片罐,它们有一个共同的优点,就是都不含有铅。这是整个战役的关键——美国食品与药物管理局和许多最积极的铅焊锡罐集团所争论的(和未经证明的)
The canning front in 1980 has been established. On the other hand, three long-term since the solder pot in the industrial backbone. Since its use more than a century ago, it has been continuously improved by canning companies to become more flexible and widely accepted by world middlemen. For example, there is one major company that manufactures 2,950 cans in compliance with material specifications for 1,100 food and beverage products. Many new breed challengers, each with its own strengths and weaknesses, are unanimous in their opposition to the three-piece can and have the common advantage of not containing lead. This is the crux of the battle - argued (and unproven) by the FDA and many of the most active lead-solder can groups,