Our company has got the ISOcercificate,we use the good material,so the products is very clear and have strong strength.Our machine is exported from Italy,so the products is easy to get.The bags can be used in the supermarket,family to pack or to keep the food and vegetables fresh. Common Size: Small:200*300cm Middle:250*380cm Large:350*450cm We import raw material HDPE,and can make the size and thickness as the custmer need.