5.the material is food grade plastic.

5. your logo is welcome

6.the size has many kinds for choosing,also can be customized

5.usually package: colorful  box, shrink with picture  

More details:

1) use the food grade PP material, safe non-toxic, tasteless, health.
2) using vacuum decompression technology, can push away the air inside the box, maintain a vacuum, dustproof prevent and oxidation of be affected with damp be affected with damp, permanent preservation.
3) open the lid: open the sealed lunch-box lifted the lid, just pull TAB lift easily lifted the lid.
4) open valve: when buckle on the lid, lift open the valve lift ring, press the lid easily into then press TAB under close the valve.
5) can be used in the microwave oven, refrigerator freezer, freezer, dishwasher use.
6) hidden air valve.Lunch box inside hot spoon vessels with soup.