Jinan Zhonglu Chang Testing Machine Manufacturing Co., Ltd., founded in 2000, covers an area of 20 acres, including a workshop of 5000 square meters and an office area of 1500 square meters; We have 3 senior engineers, 12 engineers, and the chief engineer and deputy chief engineer have nearly 30 years of experience and qualifications in testing machines; National key enterprise in the instrumentation industry. The company specializes in producing various hydraulic universal testing machines, hydraulic pressure testing machines, electronic universal testing machines, horizontal tensile testing machines, steel strand special testing machines, relaxation testing machines, anchoring testing machines, bending testing machines, electro-hydraulic servo shear testing machines, hydraulic jack testing machines, force standard machines, electro-hydraulic servo long column pressure testing machines, electro-hydraulic servo dynamic fatigue testing machines, impact testing machines, and supporting testing instruments. Sun Yunhai, Chairman of Jinan Zhonglu Chang Testing Machine Manufacturing Co., Ltd., member of the Testing Machine Working Group of the National Strength and Hardness Measurement Technical Committee, member of the National Society of Mechanics, and supervisor of the design of the servo pump device of the national patent electro-hydraulic servo universal testing machine, the national patent steel strand tensile testing machine, and the special clamp of Zhonglu Chang Company's hydraulic universal testing machine series products