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Guizhou Province山脚下也有许多农家院子，散落在树叶凋零的桃柳林中。Purpose of AOP小女娃使劲往上一纵，窜出半个身子，小胳膊撑着水面，吓得大叫道：爹。The weightlifting belt prevents spinal hyperextension by forming a hard posterior wall surrounding the lower torso and connecting the ribs and hip bones. This not only limits the backward movement of the spine, but also prevents the scoliosis and rotation of the spine. You can think of the belt as an external bone, which connects the ribs and hips by surrounding them, thus increasing stability. The strength weightlifting belt with the same width is designed according to this principle. Due to the large range of movements, the normal binding method (front binding) of the conventional weightlifting belt (narrow front and wide back) is also to achieve this goal.Shall indicate the shape size, aperture, number of various holes and tolerance requirements; Machining method of shape and aperture; Specification of additional process requirements, such as V-groove opening, hole milling, chamfering, plate punching, process edge, etc.