How thick is the paper bag
People in the paper bag packaging industry measure the thickness of paper in grams. How many grams is a square meter of paper Paper bag According to the material: kraft paper bags, white cardboard bags, copper paper bags, double-adhesive paper bags, special paper bags, divided into 60gsm, 70gsm, 120gsm, 128gsm, 157gsm, 200gsm, 210gsm, 230gsm, 250gsm,…