Great Wall succeeded in manufacturing a complete line of measuring tapes, spirit levels, adjustable wrenches, straight & square rulers. We have a mission to continue to be the world's most trusted company in tool industry by satisfying customer's need. Our business idea supports this vision by offering a wide range of well-designed, functional products with continuous improvements. Great Wall has devised a way to focus on creating products to meet every need with constant upgrades for user experiences and to assist a way of life.