Material from West Coast state taken by one company (6)
I believe the answer is:
calico
'material' is the definition.
(I know that calico is a type of material)
'west coast state taken by one company' is the wordplay.
'west coast state' becomes 'cal' (abbreviation for California).
'taken by' is a charade indicator (letters next to each other).
'one' becomes 'i' (Roman numeral).
'company' becomes 'co' (abbreviation).
'cal'+'i'+'co'='CALICO'
'from' is the link.
(Other definitions for calico that I've seen before include "Cotton cloth or fabric" , "Unbleached sixteen down cloth" , "spotted in America" , "Coarse cloth with a bright print" , "Type of cotton cloth" .)