It's made of 5pcs rectangle plastic containers and 5pcs plastic lids. The small box could put into big box, so it safe a lot space and reduce the freight charge.
It's made by plastic injection mould in injection machines.
The material for plastic boxes is high quality polypropylene. the material for plastic lids are polyethylene, which makes the item easy to open and close and also could make the lids tighter and leakage proof.
All the food boxes are microwave safe; freezer safe and dishwasher safe.
The storage container could pass FDA and any SGS test.
