大连精密零部件加工圆柱为例：好比圆柱直径是几多，有严格要求，正负误差在划定要求领域之内才是合格零件，不然都是不合格零件；如一个内嵌式圆柱体，若是直径太大，超过误差允许领域内，就会造成，插不进去的情况，若是现实直径太幼，超过误差允许负值下限了，就会造成插进去太松，不牢固的问题产生。

这些都是不合格产品，或者圆柱长度太长或太短，超出误差允许领域了，都是不合格的产品，是都要作废的，或者沉新加工，这样必然会造成成本的增长。

其次就是优质的非标精密零件加工设备和检测设备，优质的加工设备使得加工精密零件的时辰越发单一，精度更高，成效更好。

Taking the example of precision machining cylinders in Dalian: for example, there are strict requirements for the diameter of the cylinder, and only qualified parts are those with positive and negative errors within the specified range. Otherwise, they are all unqualified parts; If the diameter of an embedded cylinder is too large and exceeds the allowable error range, it will cause a situation where it cannot be inserted. If the actual diameter is too large

If the error exceeds the lower limit of the allowable negative value, it will cause the problem of inserting too loosely and not firmly.

These are all unqualified products, or if the cylinder length is too long or too short, exceeding the allowable error range, they are all unqualified products and must be invalidated or re added

This will inevitably lead to an increase in costs.

Next is high-quality non-standard precision parts processing equipment and testing equipment. High quality processing equipment makes it easier, more accurate, and more effective to process precision parts.