According to the thickness of aluminum foil, can be divided into thick foil, single zero foil and double zero foil.

1. Thick foil: the thickness of 0.1 to 0.2mm

2. Single zero foil: the thickness of 0.01mm and less than 0.1mm

3. Double zero foil: the thickness is in millimeters, with two ‘0’ behind the decimal point is usually less than 0.01mm.

When expressed in English, thick foil is also called ‘heavy gauge foil’, single zero foil is called ’medium gauge foil’, and double zero foil is called ‘light gauge foil’. Aluminum foil with thickness ≤40mm is also called light foil, while thickness more than 40mm is called by a joint name ---thick gauge foil.