STOCKHOLM, Sept 8 (Reuters) - Norway's Hydro will invest around 200 million Norwegian crowns ($18.7 million) in the modernization and expansion of a Polish recycling plant in Kety Hydro bought in June, the company said in a statement on Friday.
($1 = 10.6806 Norwegian crowns) (Reporting by Anna Ringstrom, editing by Essi Lehto)