In 1959, Berkley introduced Trilene at about the same time DuPont introduced Stren. To help introduce the new line, Berk sent out thousands of sample spools of line and asked store owners to have their best fisherman try it on a spinning reel. Fishermen loved the line and it began the successful launch of Berkley Trilene. The next four decades were a time of great growth for the company. In the 1960's Berkley entered into the rod business, which lead to international expansion in the 1970's. Soft plastic baits made an appearance in the 1980's. The 1990's through today have seen significant technology improvements in all of the Berkley products. From the beginning, Berkley has committed significant resources to research and development - a continuing strategy that has resulted in countless product innovations, including Berkley Trilene, the Lightning Rod, PowerBait, FireLine, and more recently Gulp!? and Gulp! Alive.