Shandong Liaocheng Yang Gong Tools Co. Ltd. is located in the famous hometown of Wu Song and the tiger - Jingyanggang, belonging to the Beijing Klc Holdings Ltd Yang Xu. Founded in 1985, is the first production of the Yangtze River socket wrench, stay wrench, dual-use wrenches, Plum wrenches and other manual, electric tools, professional manufacturers, the national two enterprises. The production of "Yang" brand of high, medium and low-grade wrench series products, made of high quality carbon steel and alloy steel production, the quality of the products ranked first in the same industry. Have been awarded the national Ministry of light industry award, was the national standard sleeve main drafting unit, in recent years the development of high-grade heavy-duty electric and pneumatic sleeve by American Standard production, to fill the gap, the precision of torque have reached or exceeded the United States ANSI standards, the company has passed ISO9001-2000 quality management system certification. Products not only sell well all over the country, but also exported to Europe, Asia, Africa, the United States and other countries and regions, favored by domestic and foreign customers.