Hy-Ko Products is a privately-held manufacturer with over 70 years of retail success in the manufacture and distribution of i ... ts diamond of products: Keys, Key Accessories, Electrical Specialty and Numbers, Letters & Signs. Throughout its history, Hy-Ko has focused on continued innovations in advanced technology ChipKey® cloneable and programmable auto keys and FOB remotes, creative merchandising and consistent operations with a strong emphasis on customer support. read more