This series of products for the high strength double space frame structure, the cylinder clearance seal, spherical support underneath type structure, tension and compression distance can be adjusted automatically, manually setting the automatic hydraulic clamp, automatic control mode of the two. The control unit adopts computer and electro-hydraulic servo control system, with stress and strain. Three types of displacement closed-loop control method. The test data can be arbitrary access, then analyze and realize the data and curves, local amplification and data editing, sample, test environment, conditions of programming, can automatically find the stress of materials science performance index, and print the test report and complete curve. This series of products mainly used for metal, non-metallic materials tensile, compression, bending, shearing, peeling, tearing and other mechanical properties test.