FFS means that the bag is formed (form), the product is filled into the bag (fill) and the bag is sealed (seal).
Shrink films shrink with heat and transform into the form of the product inside. It keeps the products tightly together and provides easy transportation.
Silage stretch is produced to protect products that can be affected by moisture such as grass and straw, especially silage, for a long time.
Hand stretch films are used for wrapping products without the need for a machine.