What kind of hardware component is WOOJIN PLASTIC, which appears repeatedly in the descriptions of the hats and pants?

GOYOWEAR repeatedly specifies and uses particular hardware components across different product categories, including hats and pants.

In fact, for the BLACK option of WIDE CORDUROY PANTS, WOOJIN PLASTIC hardware is used alongside a YKK zipper^[1]. WOOJIN PLASTIC components are also commonly included in both the CHARCOAL and TEAL colors of CORDUROY ARCHIVE CAP, which adjusts head circumference^[2][3].

WOOJIN PLASTIC is a specialized plastic hardware manufacturer that produces buckles and stoppers used in global outdoor brands, military equipment, and functional bags. It is lighter than metal hardware, does not rust from sweat or rain, and possesses the durability so that fastening parts do not easily break even when pulled hard or handled roughly during outdoor activities.

hmmm, even if not immediately noticeable from the outside, it means that even tiny parts manipulated daily with the fingertips have been aligned with the specifications of a specialized manufacturer proven in outdoor environments.