大連精密零部件加工圓柱為例：比如圓柱直徑是多少，有嚴格要求，正負誤差在規定要求范圍之內才是合格零件，否則都是不合格零件；如一個內嵌式圓柱體，如果直徑太大，超過誤差允許范圍內，就會造成，插不進去的情況，如果實際直徑太小，超過誤差允許負值下限了，就會造成插進去太松，不牢固的問題發生。

這些都是不合格產品，或者圓柱長度太長或太短，超出誤差允許范圍了，都是不合格的產品，是都要作廢的，或者重新加工，這樣必然會造成成本的增加。

其次就是優質的非標精密零件加工設備和檢測設備，優質的加工設備使得加工精密零件的時候更加簡單，精度更高，效果更好。

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.