St Guchi, Your Security Partner At St Guchi, we have worked hard to gain and earn the trust of our customers by delivering on our promise of strength and high quality by continuing developing lock design, application and performance. As the largest marketer of lockset, we continue to build our founder's passion for innovation and compelling value into our expanding lines of security solutions. When you are looking for a complete resource for architectural hardware, the quest for quality and value will lead you to St Guchi. With our unparalleled lineup of locks cylinders, exit devices and much more, St Guchi can meet your every need with precisely manufactured products designed to meet highest standards. With more than fifteen years' experience in lock design and marketer, St Guchi has developed a broad range of engineered solutions for the many diverse markets we serve. So that, St Guchi makes a point of making locks for professionals know that only one brand offers the widest variety of locking hardware, one key systems and door controls.