https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions
Product Info
GK-300 Series ANSI Sized Electric Strikes

GK-300 Series ANSI Sized Electric Strikes

GIANNI INDUSTRIES INC.
Region: Taiwan
Update: 01/11/2007
Key Specifications
The GK-300 series electric strikes are designed for use with cylindrical locks and mortise locksets (without deadbolt) having up to 12mm throw latchbolt.
https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions