1.Q: What is tinplate? 

A: Tinplate is the steel electrolytically coated with a fine layer of tin for tin protective purposes. Tinplate is a high quality safe packaging material for food items. There are many kinds of food used in tinplate packaging，such as cookies candies, chocolate,coffee，etc.

2.Q: What is metal proofing charge?

A: Metal proofing sample is distinctive process for showing the color effect on the metal compared with paper. It is separate process from mass production, and thus also cost money.