changjinSquare bottom three-dimensional packaging bag

PVC soft film packaging,changjin square bottom packaging bag, aluminum bag window packaging bag, thr...

changjinElectric insulation crinkle paper

changjin Insulating Wrinkle Paper, also known as crumpled paper,changjin refers to a type of process...

changjinFood storage bag

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

changjinAluminum-plastic film material

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