In the context of the input sentence, determine the relationship between 'Assa Abloy' and 'lock'.
Options: distributed by, location of formation, product/material produced, manufacturer

Strengthening customer demand allowed companies including Swedish lock maker Assa Abloy (ASSAb.ST) , packaging maker Smurfit and dairy group Danone (DANO.PA) to raise prices or lift margins.
product/material produced