Tensile machine is also known as tensile testing machine. Tensile machine is a mechanical force testing machine used to test the mechanical properties of materials such as elongation, compression, bending, shear and detachment. It is suitable for spring, plastic plate, Various physical and mechanical Performance testing of pipes, profile materials, plastic films and rubber, wires and cables, waterproof membranes, metal wires and other materials used in various industries: scientific research institutes, commodity inspection and arbitration institutions, colleges and universities, and rubber, tire, plastic, Wire and cable, footwear, leather, textile, packaging, building materials, petrochemical, aerospace and other industries. It is an indispensable testing instrument for material development, physical property testing and teaching research, quality control, incoming material inspection, random sampling inspection of production lines, etc. As an important part of the instrument, the device of the traction machine requires different devices for different materials, which is also an important factor in the smooth running of the test and the accuracy of the test results.