Zhang Qiu Haihua machinery manufacturers have introduced new products, nylon wheel affordable quality guaranteed waiting for you. Rotary support is nearly four decades in the world of new mechanical parts gradually rise, it has inner and outer rings, rolling, etc., at present, China's production of slewing ring shape, mainly in the early 1980s designated by the Ministry of Machinery Industry Tianjin Engineering Machinery Institute organized the introduction of the former Federal Republic of Germany Rothe Erde company's design and manufacturing technology. December 20, 1984 issued the People's Republic of China Machinery Industry Standard: JB / 2300-84 "slewing ring type, basic parameters and technical requirements", mainly by machinery and electronics industry in Tianjin Institute of Mechanical Engineering, Xuzhou rotary bearing plant is responsible drafting, and later the state has issued building mechanical standards in 1991: JB36.1-36.3-91, in 1999 and 2011 has released new mechanical industry standard JB / 2300-1999 and JB / 2300-2011. Zhang Qiu Haihua machinery manufacturers have introduced new products, nylon wheel affordable quality guaranteed waiting for you. Founded in 2004, located in Zhangqiu City Industrial Park Township shallow wells. Company employees in a "standardized management, quality, customer satisfaction," the quality policy toward "no accident, leading defect" the quality objectives of the struggle, our company will strive hard work, high efficiency, high standards to fulfill their commitment to high-quality products at low prices and excellent service with you embark on the road to Tenda career. The company dedicated to working closely with the broad masses of people, and seek common cause, create brilliant. Contact: Jiajing Li Mobile: 15098766773 Website: www.zqhaihua.com Address: Zhangqiu City Industrial Park Township Asai