It belongs to middle size lunch tin box as packing lunch food and most customers use it as storage box. Usually, lunch tin box matched a handle - ABS or metal material and a lock to keep lunch metal box stable and tight. It applies 0.28mm hard tinplate material to make lunch box load more food without damage. Comparing the other lunch tin shape, this lunch metal box is near to square that this lunch metal box could pack more items, the appropriate length and width could allows one handle and one lock in the body of tin with nice appearance and strong lock. The middle size lunch tin box is very popular in the market because of the huge space and exquiste outside.
There is no technical barrier for this metal lunch box because it developed many years. The only difference is the material using with different companies. If one company with standard or better material like 0.28mm hard tinplate, solid accessories like 304 SS nail, lock and ABS plastic handle to resist rust and double lid structure, the quality of this lunch metal box will be premium. The whole lunch tin box applies closed tin size to enlarge the inside space, the larger R corner reduces the color changing under the stretching process, hard tinplate and right accessories ensure the quality of this lunch tin box.
There is no printing limit for this metal lunch box because of the shorter lid or bottom that wouldn't affect by stretching process. Usually, most of customers choose matt finish with darner color for this middle size lunch metal box that could show the classical and decent appearance. If it's working for food lunch, matt finish will be better because the dirty mark could be cleared easily. If it's for storage, it could be half matt and half glossy or fully glossy to be displayed obviously.
This middle size metal lunch box is desgned for food lunch packing. But the huge inside space makes it to be storage box easily. With the business developing, it could be high-end metal box for some valuable products like ABS thermal thermos or marijuana items packaging. There is no specific application by this tin box because it's as a packaging only.