foldable Polypropylene plastic box 1,thickness:2-10mm 2, ... hollow boardlight texture, hardness is goodCompared with paper item moistureproof, corrosion3.applicatioin industries:I, Non-toxic, non- ... polluting, waterproof, shockproof, anti-aging, corrosion resistance, moistureproof.II, applied to electronic, packing, machinery, light, postal, ... as the following: foldable Polypropylene plastic box