langenSquare bottom three-dimensional packaging bag

PVC soft film packaging,langen square bottom packaging bag, aluminum bag window packaging bag, three...

langenElectric insulation crinkle paper

langen Insulating Wrinkle Paper, also known as crumpled paper,langen refers to a type of processed p...

langenFood storage bag

langen Body moisture-proof bags (grain storage bags, aluminum-plastic composite bags, vacuum food ba...

langenAluminum-plastic film material

The langen moisture-proof effect of aluminum-plastic film material is 80 times that of ordinary poly...