Gosen is the synthetic fiber compamy espablished in 1951 in Japan. It has produced quality fishing lines as well, and this Guidus PEx9 is the high-end braided line from the company. Guidus PEx9 is braided with center core strand and outer 8-strand shell. The core and shell are well balanced to offer superb sensitivity, strength, shock absorbing performance and long life. As a fiber manufacturer, it also put large effor to pursue the best braid way for each thickness of line. A lot of state of arts technologies support to make this line well balanced, and easy to use. Color: Light Green. Made in Japan.