1. It's suitable for packing materials as follows:
Fittings (screw, nut, washer, nail, pipes, joint etc.),
Leechdom(tablets, capsule etc.),
Food(candy, biscuit etc.),
Furniture spare parts, hardwares, machinery and appliance spare parts,
Clothes parts (button, slider etc.) and other solid material.
It can pack the same material or mix the materials in bags or cartons by quantity.
2. For the heavy screws and fittings etc., to avoid the products punch or break the bags, can use this kind of packing.