what does De Zoeker, Zaandam and Flax have in common?
De Zoeker, Zaandam:  Its purpose is to press seeds such as linseed and rapeseed into vegetable oil. Flax: Flax (also known as common flax or linseed), "Linum usitatissimum", is a member of the genus "Linum" in the family Linaceae.
linseed