tin free steel sheet

例句：

1. 1.This new car has a tin free steel sheet roof.
   这款新车有一个无铅钢板屋顶。
2. 2.The manufacturer claims that their tin free steel sheet is environmentally friendly.
   制造商声称他们的无铅钢板是环保的。
3. 3.The tin free steel sheet used in this building is of high quality.
   这座建筑中使用的无铅钢板质量很高。